Koken Socket Set 3/8" Drive 12 Piece On Magnetic Rail 7-19mm KORS3400MZ/12
The Ko-Ken RS3400MZ/12 is a metric Z-series 6-point socket set on rail with a 3/8 in square drive and 12 pieces. (manufacturer-stated) The 12 pieces are 6-point sockets in sizes 7 to 19 mm, mounted on a 300 mm rail. (manufacturer-stated) Set weight is 490 g. (manufacturer-stated) Where this product is used Nut and bolt work across a range of metric sizes with a 3/8 in drive ratchet or handle Workshop, vehicle and maintenance fastening Keeping the sockets together on one rail Features 3/8 in square drive (manufacturer-stated) 12 pieces (manufacturer-stated) 6-point sockets (manufacturer-stated) Metric sizes (manufacturer-stated) 300 mm rail (manufacturer-stated) 490 g set weight (manufacturer-stated) Key specifications Specification Detail Drive 3/8 in (manufacturer-stated) Pieces 12 (manufacturer-stated) Point type 6-point (manufacturer-stated) Sizes in set 7 to 19 mm (manufacturer-stated) Rail length 300 mm (manufacturer-stated) Set weight 490 g (manufacturer-stated) Selecting the right option Choose the set that covers the sizes you work with and matches the 3/8 in square drive of your ratchet or handle. The set line prints the sizes, piece count, rail length and set weight only. The catalogue lists the set with the 3400MZ 6-point sockets, and the socket series on the rail is taken from the set code. The catalogue prints the set weight but does not say whether it includes the rail. The catalogue's safety notes say to select impact sockets only for electric or air impact wrenches and to wear safety goggles when using nut runners or impact wrenches. (manufacturer-stated) Related products Related Ko-Ken products: Ko-Ken RS3300M/12 and RS3305M/12 Metric 6-Point and 12-Point Deep Socket Set on Rail, Ko-Ken RS3300XZ/12 Metric Z-Series 6-Point Semi-Deep Socket Set on Rail, 3/8 in Drive, Ko-Ken RS3400M/12 and RS3405M/12 Metric 6-Point and 12-Point Socket Set on Rail and Ko-Ken RS3X00MZ/12 Metric Z-Series 6-Point Standard and Deep Socket Set on Rail.
The Ko-Ken RS3400MZ/12 is a metric Z-series 6-point socket set on rail with a 3/8 in square drive and 12 pieces. (manufacturer-stated) The 12 pieces are 6-point sockets in sizes 7 to 19 mm, mounted on a 300 mm rail. (manufacturer-stated) Set weight is 490 g. (manufacturer-stated) Where this product is used Nut and bolt work across a range of metric sizes with a 3/8 in drive ratchet or handle Workshop, vehicle and maintenance fastening Keeping the sockets together on one rail Features 3/8 in square drive (manufacturer-stated) 12 pieces (manufacturer-stated) 6-point sockets (manufacturer-stated) Metric sizes (manufacturer-stated) 300 mm rail (manufacturer-stated) 490 g set weight (manufacturer-stated) Key specifications Specification Detail Drive 3/8 in (manufacturer-stated) Pieces 12 (manufacturer-stated) Point type 6-point (manufacturer-stated) Sizes in set 7 to 19 mm (manufacturer-stated) Rail length 300 mm (manufacturer-stated) Set weight 490 g (manufacturer-stated) Selecting the right option Choose the set that covers the sizes you work with and matches the 3/8 in square drive of your ratchet or handle. The set line prints the sizes, piece count, rail length and set weight only. The catalogue lists the set with the 3400MZ 6-point sockets, and the socket series on the rail is taken from the set code. The catalogue prints the set weight but does not say whether it includes the rail. The catalogue's safety notes say to select impact sockets only for electric or air impact wrenches and to wear safety goggles when using nut runners or impact wrenches. (manufacturer-stated) Related products Related Ko-Ken products: Ko-Ken RS3300M/12 and RS3305M/12 Metric 6-Point and 12-Point Deep Socket Set on Rail, Ko-Ken RS3300XZ/12 Metric Z-Series 6-Point Semi-Deep Socket Set on Rail, 3/8 in Drive, Ko-Ken RS3400M/12 and RS3405M/12 Metric 6-Point and 12-Point Socket Set on Rail and Ko-Ken RS3X00MZ/12 Metric Z-Series 6-Point Standard and Deep Socket Set on Rail.
The Ko-Ken RS3400MZ/12 is a metric Z-series 6-point socket set on rail with a 3/8 in square drive and 12 pieces. (manufacturer-stated) The 12 pieces are 6-point sockets in sizes 7 to 19 mm, mounted on a 300 mm rail. (manufacturer-stated) Set weight is 490 g. (manufacturer-stated) Where this product is used Nut and bolt work across a range of metric sizes with a 3/8 in drive ratchet or handle Workshop, vehicle and maintenance fastening Keeping the sockets together on one rail Features 3/8 in square drive (manufacturer-stated) 12 pieces (manufacturer-stated) 6-point sockets (manufacturer-stated) Metric sizes (manufacturer-stated) 300 mm rail (manufacturer-stated) 490 g set weight (manufacturer-stated) Key specifications Specification Detail Drive 3/8 in (manufacturer-stated) Pieces 12 (manufacturer-stated) Point type 6-point (manufacturer-stated) Sizes in set 7 to 19 mm (manufacturer-stated) Rail length 300 mm (manufacturer-stated) Set weight 490 g (manufacturer-stated) Selecting the right option Choose the set that covers the sizes you work with and matches the 3/8 in square drive of your ratchet or handle. The set line prints the sizes, piece count, rail length and set weight only. The catalogue lists the set with the 3400MZ 6-point sockets, and the socket series on the rail is taken from the set code. The catalogue prints the set weight but does not say whether it includes the rail. The catalogue's safety notes say to select impact sockets only for electric or air impact wrenches and to wear safety goggles when using nut runners or impact wrenches. (manufacturer-stated) Related products Related Ko-Ken products: Ko-Ken RS3300M/12 and RS3305M/12 Metric 6-Point and 12-Point Deep Socket Set on Rail, Ko-Ken RS3300XZ/12 Metric Z-Series 6-Point Semi-Deep Socket Set on Rail, 3/8 in Drive, Ko-Ken RS3400M/12 and RS3405M/12 Metric 6-Point and 12-Point Socket Set on Rail and Ko-Ken RS3X00MZ/12 Metric Z-Series 6-Point Standard and Deep Socket Set on Rail.
The Ko-Ken RS3400MZ/12 is a metric Z-series 6-point socket set on rail with a 3/8 in square drive and 12 pieces. (manufacturer-stated) The 12 pieces are 6-point sockets in sizes 7 to 19 mm, mounted on a 300 mm rail. (manufacturer-stated) Set weight is 490 g. (manufacturer-stated) Where this product is used Nut and bolt work across a range of metric sizes with a 3/8 in drive ratchet or handle Workshop, vehicle and maintenance fastening Keeping the sockets together on one rail Features 3/8 in square drive (manufacturer-stated) 12 pieces (manufacturer-stated) 6-point sockets (manufacturer-stated) Metric sizes (manufacturer-stated) 300 mm rail (manufacturer-stated) 490 g set weight (manufacturer-stated) Key specifications Specification Detail Drive 3/8 in (manufacturer-stated) Pieces 12 (manufacturer-stated) Point type 6-point (manufacturer-stated) Sizes in set 7 to 19 mm (manufacturer-stated) Rail length 300 mm (manufacturer-stated) Set weight 490 g (manufacturer-stated) Selecting the right option Choose the set that covers the sizes you work with and matches the 3/8 in square drive of your ratchet or handle. The set line prints the sizes, piece count, rail length and set weight only. The catalogue lists the set with the 3400MZ 6-point sockets, and the socket series on the rail is taken from the set code. The catalogue prints the set weight but does not say whether it includes the rail. The catalogue's safety notes say to select impact sockets only for electric or air impact wrenches and to wear safety goggles when using nut runners or impact wrenches. (manufacturer-stated) Related products Related Ko-Ken products: Ko-Ken RS3300M/12 and RS3305M/12 Metric 6-Point and 12-Point Deep Socket Set on Rail, Ko-Ken RS3300XZ/12 Metric Z-Series 6-Point Semi-Deep Socket Set on Rail, 3/8 in Drive, Ko-Ken RS3400M/12 and RS3405M/12 Metric 6-Point and 12-Point Socket Set on Rail and Ko-Ken RS3X00MZ/12 Metric Z-Series 6-Point Standard and Deep Socket Set on Rail.
in 18 offers
The lowest price for Koken Socket Set 3/8" Drive 12 Piece On Magnetic Rail 7-19mm KORS3400MZ/12 right now is $125.36 at Amazon.com.au, compared across 10 retailers.
The all-time low was $69.00 on 1 June 2025 — today's price is 82% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 3 Nov 2026.
Last updated at 03/11/2026 01:40:51
Yamashita Industrial Research Laboratory Koken Z-EAL 3/8 (9.5 mm) SQ. Hex Socket Rail Set, 12 Pieces, RS3400MZ/12
Delivery $11
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Ko-Ken 12 Piece 3/8" Drive Stubby Socket Set on a Magnetic Rail - KORS3400MZ/12
Free delivery
Koken Z-eal 3/8 9.5mm Sq. 6 Hex Socket Rail Set 12set Rs3400mz/12 F/s
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Koken - Socket Set 3/8" Drive 12 Piece On Magnetic Rail 7-19mm | KORS3400MZ/12
Delivery between 3–11 Nov $7.95
Ko-Ken KORS3400MZ/12 12pce 7mm-19mm 3/8" Drive Z-Series Socket Set on Magnetic Rail
Free delivery
Koken RS3400MZ/12 Z Series Stubby Socket Set 3/8′′ Square Drive 6 Point 12 Piece on Magnetic Rail 7mm-19mm Metric - Made in Japan
Delivery between 4–13 Nov $17.95
Ko-ken Z Series Socket Set Rail 7-19mm 6pt 3/8 Drive
Free delivery
KOKEN 3/8" hex metric socket z-series set (12 pcs.)
Delivery $86.65
KOKEN 12 Piece 7-19mm 3/8inch Metric Socket Rail Set KORS3400MZ12
Free delivery between 9–12 Nov
KORS3400MZ/12 - Ko-Ken StocketSet 3/8" Drive 12 piece on Magnetic Rail 7-19MM
Delivery between 9–13 Nov $7.60
originally posted on ebay.com
Low profile, fine tolerances, excellent finish, have Koken socketry from my apprentice days that's 40+ years old, still same excellent tooling and at very competitive price.
| Included Tools | Socket Rail Set, Sockets |
| Torque Range | 50 Nm |
| Power Source | Manual |
| Overall Size | Compact |
| Construction Material | Chrome Vanadium Steel |
Yamashita Industrial Research Laboratory Koken Z-EAL 3/8 (9.5 mm) SQ. Hex Socket Rail Set, 12 Pieces, RS3400MZ/12
Delivery $11
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Ko-Ken 12 Piece 3/8" Drive Stubby Socket Set on a Magnetic Rail - KORS3400MZ/12
Free delivery
Koken Z-eal 3/8 9.5mm Sq. 6 Hex Socket Rail Set 12set Rs3400mz/12 F/s
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Koken - Socket Set 3/8" Drive 12 Piece On Magnetic Rail 7-19mm | KORS3400MZ/12
Delivery between 3–11 Nov $7.95
Ko-Ken KORS3400MZ/12 12pce 7mm-19mm 3/8" Drive Z-Series Socket Set on Magnetic Rail
Free delivery
Low profile, fine tolerances, excellent finish, have Koken socketry from my apprentice days that's 40+ years old, still same excellent tooling and at very competitive price.
| Included Tools | Socket Rail Set, Sockets |
| Torque Range | 50 Nm |
| Power Source | Manual |
| Overall Size | Compact |
| Construction Material | Chrome Vanadium Steel |
