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Ko-Ken

Ko-Ken


Ko-Ken Professional Tools: Premium Industrial Hand Tools

Professional-Grade Ko-Ken Tools from Your Trusted Michigan-Based Distributor

Discover the Ko-Ken collection at Freer Tool & Supply—your destination for premium Japanese hand tools and sockets renowned for precision, durability, and professional performance. Our selection includes Ko-Ken’s high-quality impact sockets, ratchets, extensions, and specialty tools, all engineered for demanding automotive, industrial, and maintenance applications. Whether you’re a technician, mechanic, or industry professional, Ko-Ken tools deliver the reliability and accuracy you need for every job.


Ko-ken United states distributors

High Performance Tools of Convincing Quality.

Founded in 2012 by Jim Chase, Koken USA began sharing in the tool marketplace about an excellent product line of tools that was new to North America. He was so impressed by their quality and engineering that he claimed, "If we can just get them (Koken sockets) into the hands of the consumer, they will never buy anything else."

First with the introduction of Koken's broad line of standard sockets and tools, followed by their offering of custom sockets to meet specific customer requirements, Koken quickly developed a reputation for quality tools and outstanding customer service in North America.

Available Product Lines:
Professional Hand Tools:

Socket Sets
Impact Sockets
Specialty Tools
Industrial Solutions

Ko-ken 13134X.52-M8 3/8 Sq. Dr. Bit Socket XZN M8 Triple Square Length 52mm

Ko-ken 13134X.52-M8 3/8 Sq. Dr. Bit Socket XZN M8 Triple Square Length 52mm

SKU: KK-13134X.52-M8
MPN: 13134X.52-M8

Save $7.56
Ko-ken 13134X.92-M10 3/8 Sq. Dr. Bit Socket XZN M10 Triple Square Length 92mm

Ko-ken 13134X.92-M10 3/8 Sq. Dr. Bit Socket XZN M10 Triple Square Length 92mm

SKU: KK-13134X.92-M10
MPN: 13134X.92-M10

Save $8.09
Ko-ken 13134X.92-M12 3/8 Sq. Dr. Bit Socket XZN M12 Triple Square Length 92mm

Ko-ken 13134X.92-M12 3/8 Sq. Dr. Bit Socket XZN M12 Triple Square Length 92mm

SKU: KK-13134X.92-M12
MPN: 13134X.92-M12

Save $9.75
Ko-ken 13134X.92-M14 3/8 Sq. Dr. Bit Socket XZN M14 Triple Square Length 92mm

Ko-ken 13134X.92-M14 3/8 Sq. Dr. Bit Socket XZN M14 Triple Square Length 92mm

SKU: KK-13134X.92-M14
MPN: 13134X.92-M14

Save $10.09
Ko-ken 13134X.92-M5 3/8 Sq. Dr. Bit Socket XZN M5 Triple Square Length 92mm

Ko-ken 13134X.92-M5 3/8 Sq. Dr. Bit Socket XZN M5 Triple Square Length 92mm

SKU: KK-13134X.92-M5
MPN: 13134X.92-M5

Save $8.06
Ko-ken 13134X.92-M6 3/8 Sq. Dr. Bit Socket XZN M6 Triple Square Length 92mm

Ko-ken 13134X.92-M6 3/8 Sq. Dr. Bit Socket XZN M6 Triple Square Length 92mm

SKU: KK-13134X.92-M6
MPN: 13134X.92-M6

Save $8.06
Ko-ken 13134X.92-M8 3/8 Sq. Dr. Bit Socket XZN M8 Triple Square Length 92mm

Ko-ken 13134X.92-M8 3/8 Sq. Dr. Bit Socket XZN M8 Triple Square Length 92mm

SKU: KK-13134X.92-M8
MPN: 13134X.92-M8

Save $8.06
Ko-ken 13137E 3/8 Sq. Dr. Bit Holder 1/4 Hex Length 40mm

Ko-ken 13137E 3/8 Sq. Dr. Bit Holder 1/4 Hex Length 40mm

SKU: KK-13137E
MPN: 13137E

Save $5.31
Ko-ken 13137H 3/8 Sq. Dr. Bit Holder 1/4 Hex Length 42mm

Ko-ken 13137H 3/8 Sq. Dr. Bit Holder 1/4 Hex Length 42mm

SKU: KK-13137H
MPN: 13137H

Save $8.64
Ko-ken 13139-1/4 3/8 Sq. Dr. Adaptor 1/4 For 1/4H Bit Length 30mm

Ko-ken 13139-1/4 3/8 Sq. Dr. Adaptor 1/4 For 1/4H Bit Length 30mm

SKU: KK-13139-1/4
MPN: 13139-1/4

Save $4.65
Ko-ken 13140-5/16 3/8 Sq. Dr. Adaptor 5/16 For 5/16H Bit Length 30mm

Ko-ken 13140-5/16 3/8 Sq. Dr. Adaptor 5/16 For 5/16H Bit Length 30mm

SKU: KK-13140-5/16
MPN: 13140-5/16

Save $4.40
Ko-ken 13142-D6.3 3/8 Sq. Dr. Adaptor 1/4 For 1/4H Bit Length 45mm Locking Quick release

Ko-ken 13142-D6.3 3/8 Sq. Dr. Adaptor 1/4 For 1/4H Bit Length 45mm Locking Quick release

SKU: KK-13142-D6.3
MPN: 13142-D6.3

Save $12.77
Ko-ken 13142-F11.2 3/8 Sq. Dr. Bit Holder 7/16 For 183 series Length 46mm Locking Quick Release

Ko-ken 13142-F11.2 3/8 Sq. Dr. Bit Holder 7/16 For 183 series Length 46mm Locking Quick Release

SKU: KK-13142-F11.2
MPN: 13142-F11.2

Save $13.50
Ko-ken 13142-F6.3 3/8 Sq. Dr. Bit Holder 1/4 Hex Length 45mm Locking Quick Release

Ko-ken 13142-F6.3 3/8 Sq. Dr. Bit Holder 1/4 Hex Length 45mm Locking Quick Release

SKU: KK-13142-F6.3
MPN: 13142-F6.3

Save $13.67
Ko-ken 13145A.150-9/16(D20) 3/8 Sq. Dr. Extension Socket 9/16 6 point Length 150mm For Prop Shaft

Ko-ken 13145A.150-9/16(D20) 3/8 Sq. Dr. Extension Socket 9/16 6 point Length 150mm For Prop Shaft

SKU: KK-13145A.150-9/16(D20)
MPN: 13145A.150-9/16(D20)

Save $11.26
Ko-ken 13145M.100-10 3/8 Sq. Dr. Extension Socket 10mm 6 point Length 100mm

Ko-ken 13145M.100-10 3/8 Sq. Dr. Extension Socket 10mm 6 point Length 100mm

SKU: KK-13145M.100-10
MPN: 13145M.100-10

Save $7.47
Ko-ken 13145M.100-10(12P) 3/8 Sq. Dr. Extension Socket 10mm 12 point Length 100mm

Ko-ken 13145M.100-10(12P) 3/8 Sq. Dr. Extension Socket 10mm 12 point Length 100mm

SKU: KK-13145M.100-10(12P)
MPN: 13145M.100-10(12P)

Save $8.40
Ko-ken 13145M.100-12 3/8 Sq. Dr. Extension Socket 12mm 6 point Length 100mm

Ko-ken 13145M.100-12 3/8 Sq. Dr. Extension Socket 12mm 6 point Length 100mm

SKU: KK-13145M.100-12
MPN: 13145M.100-12

Save $7.47
Ko-ken 13145M.100-12(12P) 3/8 Sq. Dr. Extension Socket 12mm 12 point Length 100mm

Ko-ken 13145M.100-12(12P) 3/8 Sq. Dr. Extension Socket 12mm 12 point Length 100mm

SKU: KK-13145M.100-12(12P)
MPN: 13145M.100-12(12P)

Save $8.40
Ko-ken 13145M.100-13 3/8 Sq. Dr. Extension Socket 13mm 6 point Length 100mm

Ko-ken 13145M.100-13 3/8 Sq. Dr. Extension Socket 13mm 6 point Length 100mm

SKU: KK-13145M.100-13
MPN: 13145M.100-13

Save $8.81
Ko-ken 13145M.100-14 3/8 Sq. Dr. Extension Socket 14mm 6 point Length 100mm

Ko-ken 13145M.100-14 3/8 Sq. Dr. Extension Socket 14mm 6 point Length 100mm

SKU: KK-13145M.100-14
MPN: 13145M.100-14

Save $8.81
Ko-ken 13145M.100-17 3/8 Sq. Dr. Extension Socket 17mm 6 point Length 100mm

Ko-ken 13145M.100-17 3/8 Sq. Dr. Extension Socket 17mm 6 point Length 100mm

SKU: KK-13145M.100-17
MPN: 13145M.100-17

Save $8.81
Ko-ken 13145M.100-8 3/8 Sq. Dr. Extension Socket 8mm 6 point Length 100mm

Ko-ken 13145M.100-8 3/8 Sq. Dr. Extension Socket 8mm 6 point Length 100mm

SKU: KK-13145M.100-8
MPN: 13145M.100-8

Save $7.47
Ko-ken 13145M.150-10 3/8 Sq. Dr. Extension Socket 10mm 6 point Length 150mm

Ko-ken 13145M.150-10 3/8 Sq. Dr. Extension Socket 10mm 6 point Length 150mm

SKU: KK-13145M.150-10
MPN: 13145M.150-10

Save $10