The Sockets within the Z-Series line are thin-wall and shorter in height than standard sockets. This development took place to ensure that our sockets could fit into any situation they need to. Note that the compact design does not sacrifice quality nor strength of the sockets.
The Sockets within the Z-Series line are thin-wall and shorter in height than standard sockets. This development took place to ensure that our sockets could fit into any situation they need to. Note that the compact design does not sacrifice quality nor strength of the sockets.
The Sockets within the Z-Series line are thin-wall and shorter in height than standard sockets. This development took place to ensure that our sockets could fit into any situation they need to. Note that the compact design does not sacrifice quality nor strength of the sockets.
The Sockets within the Z-Series line are thin-wall and shorter in height than standard sockets. This development took place to ensure that our sockets could fit into any situation they need to. Note that the compact design does not sacrifice quality nor strength of the sockets.
Last updated at 06/09/2026 14:38:41
Yamashita Industrial Research Laboratory Koken Z-EAL 3/8 (9.5 mm) SQ. Hex Socket Rail Set, 12 Pieces, RS3400MZ/12
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!
Ko-ken Socket Set On Magnetic Rail 12 Piece 3/8"dr 7-19mm
Delivery $12.90
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 Hexagon Socket Rail Set 12pcs Z-eal 3/8 9.5mm Sq. Rs3400mz/12
Delivery $23.41
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 Hexagon Socket Rail Set 12pcs Z-eal 3/8 9.5mm Sq. Rs3400mz/12
Delivery $52.67
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 Socket Set On Rail 12 Piece 3/8" 6pt 7-19mm Metric Koken
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!
Trusco Yamashita Industrial Research Institute Koken Z-eal 3/8"
Delivery $13.35
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 Z-eal 3/8” Standard Socket Set (12pcs) Rs3400mz/12
Delivery $31.20
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 Rs3400mz/12 3/8 Sq. Dr. Socket Set 7-19mm 6 Point Z-series 12
Delivery $43.30
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 KORS3400MZ/12 12pce 7mm-19mm 3/8" Drive Z-Series Socket Set on Magnetic Rail
Free delivery between 16–24 June
KOKEN 12 Piece 7-19mm 3/8inch Metric Socket Rail Set KORS3400MZ12
Free delivery between 16–19 June
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.
| Item dimensions L x W x H | 37.2 x 8.9 x 5.8 centimetres |
| Drive system | Hex |
| Product dimensions | 37.21 x 8.89 x 5.79 cm; 490 Grams |
| Is discontinued by manufacturer | No |
| Style | Pack of 12 |
Yamashita Industrial Research Laboratory Koken Z-EAL 3/8 (9.5 mm) SQ. Hex Socket Rail Set, 12 Pieces, RS3400MZ/12
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!
Ko-ken Socket Set On Magnetic Rail 12 Piece 3/8"dr 7-19mm
Delivery $12.90
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 Hexagon Socket Rail Set 12pcs Z-eal 3/8 9.5mm Sq. Rs3400mz/12
Delivery $23.41
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 Hexagon Socket Rail Set 12pcs Z-eal 3/8 9.5mm Sq. Rs3400mz/12
Delivery $52.67
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 Socket Set On Rail 12 Piece 3/8" 6pt 7-19mm Metric Koken
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!
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.
| Item dimensions L x W x H | 37.2 x 8.9 x 5.8 centimetres |
| Drive system | Hex |
| Product dimensions | 37.21 x 8.89 x 5.79 cm; 490 Grams |
| Is discontinued by manufacturer | No |
| Style | Pack of 12 |
