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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 4400M-36 1/2 Sq. Dr. Socket 36mm 6 point Length 47mm

Ko-ken 4400M-36 1/2 Sq. Dr. Socket 36mm 6 point Length 47mm

SKU: KK-4400M-36
MPN: 4400M-36

Save $5.13
Ko-ken 4400M-37 1/2 Sq. Dr. Socket 37mm 6 point Length 47mm

Ko-ken 4400M-37 1/2 Sq. Dr. Socket 37mm 6 point Length 47mm

SKU: KK-4400M-37
MPN: 4400M-37

Save $7.66
Ko-ken 4400M-38 1/2 Sq. Dr. Socket 38mm 6 point Length 47mm

Ko-ken 4400M-38 1/2 Sq. Dr. Socket 38mm 6 point Length 47mm

SKU: KK-4400M-38
MPN: 4400M-38

Save $7.66
Ko-ken 4400M-41 1/2 Sq. Dr. Socket 41mm 6 point Length 57mm

Ko-ken 4400M-41 1/2 Sq. Dr. Socket 41mm 6 point Length 57mm

SKU: KK-4400M-41
MPN: 4400M-41

Save $12.90
Ko-ken 4400M-41DU 1/2 Sq. Dr. Socket 41mm 6 point Length 28mm For Rear Wheel Nut Motorcycle

Ko-ken 4400M-41DU 1/2 Sq. Dr. Socket 41mm 6 point Length 28mm For Rear Wheel Nut Motorcycle

SKU: KK-4400M-41DU
MPN: 4400M-41DU

Save $22.97
Ko-ken 4400M-46 1/2 Sq. Dr. Socket 46mm 6 point Length 60mm

Ko-ken 4400M-46 1/2 Sq. Dr. Socket 46mm 6 point Length 60mm

SKU: KK-4400M-46
MPN: 4400M-46

Save $12.90
Ko-ken 4400M-46DU 1/2 Sq. Dr. Socket 46mm 6 point Length 28mm For Rear Wheel Nut Motorcycle

Ko-ken 4400M-46DU 1/2 Sq. Dr. Socket 46mm 6 point Length 28mm For Rear Wheel Nut Motorcycle

SKU: KK-4400M-46DU
MPN: 4400M-46DU

Save $16.99
Ko-ken 4400M-6 1/2 Sq. Dr. Socket 6mm 6 point Length 36mm

Ko-ken 4400M-6 1/2 Sq. Dr. Socket 6mm 6 point Length 36mm

SKU: KK-4400M-6
MPN: 4400M-6

Save $1.39
Ko-ken 4400M-7 1/2 Sq. Dr. Socket 7mm 6 point Length 36mm

Ko-ken 4400M-7 1/2 Sq. Dr. Socket 7mm 6 point Length 36mm

SKU: KK-4400M-7
MPN: 4400M-7

Save $1.39
Ko-ken 4400M-8 1/2 Sq. Dr. Socket 8mm 6 point Length 36mm

Ko-ken 4400M-8 1/2 Sq. Dr. Socket 8mm 6 point Length 36mm

SKU: KK-4400M-8
MPN: 4400M-8

Save $1.39
Ko-ken 4400M-9 1/2 Sq. Dr. Socket 9mm 6 point Length 37mm

Ko-ken 4400M-9 1/2 Sq. Dr. Socket 9mm 6 point Length 37mm

SKU: KK-4400M-9
MPN: 4400M-9

Save $1.39
Ko-ken 4400MZ-10 1/2 Sq. Dr. Socket 10mm 6 point Length 26mm Z-series

Ko-ken 4400MZ-10 1/2 Sq. Dr. Socket 10mm 6 point Length 26mm Z-series

SKU: KK-4400MZ-10
MPN: 4400MZ-10

Save $1.89
Ko-ken 4400MZ-12 1/2 Sq. Dr. Socket 12mm 6 point Length 27mm Z-series

Ko-ken 4400MZ-12 1/2 Sq. Dr. Socket 12mm 6 point Length 27mm Z-series

SKU: KK-4400MZ-12
MPN: 4400MZ-12

Save $1.89
Ko-ken 4400MZ-13 1/2 Sq. Dr. Socket 13mm 6 point Length 28mm Z-series

Ko-ken 4400MZ-13 1/2 Sq. Dr. Socket 13mm 6 point Length 28mm Z-series

SKU: KK-4400MZ-13
MPN: 4400MZ-13

Save $1.89
Ko-ken 4400MZ-14 1/2 Sq. Dr. Socket 14mm 6 point Length 28mm Z-series

Ko-ken 4400MZ-14 1/2 Sq. Dr. Socket 14mm 6 point Length 28mm Z-series

SKU: KK-4400MZ-14
MPN: 4400MZ-14

Save $1.92
Ko-ken 4400MZ-16 1/2 Sq. Dr. Socket 16mm 6 point Length 29mm Z-series

Ko-ken 4400MZ-16 1/2 Sq. Dr. Socket 16mm 6 point Length 29mm Z-series

SKU: KK-4400MZ-16
MPN: 4400MZ-16

Save $2.01
Ko-ken 4400MZ-17 1/2 Sq. Dr. Socket 17mm 6 point Length 29mm Z-series

Ko-ken 4400MZ-17 1/2 Sq. Dr. Socket 17mm 6 point Length 29mm Z-series

SKU: KK-4400MZ-17
MPN: 4400MZ-17

Save $2.01
Ko-ken 4400MZ-18 1/2 Sq. Dr. Socket 18mm 6 point Length 29mm Z-series

Ko-ken 4400MZ-18 1/2 Sq. Dr. Socket 18mm 6 point Length 29mm Z-series

SKU: KK-4400MZ-18
MPN: 4400MZ-18

Save $2.16
Ko-ken 4400MZ-19 1/2 Sq. Dr. Socket 19mm 6 point Length 29mm Z-series

Ko-ken 4400MZ-19 1/2 Sq. Dr. Socket 19mm 6 point Length 29mm Z-series

SKU: KK-4400MZ-19
MPN: 4400MZ-19

Save $2.16
Ko-ken 4400MZ-21 1/2 Sq. Dr. Socket 21mm 6 point Length 29mm Z-series

Ko-ken 4400MZ-21 1/2 Sq. Dr. Socket 21mm 6 point Length 29mm Z-series

SKU: KK-4400MZ-21
MPN: 4400MZ-21

Save $2.98
Ko-ken 4400MZ-22 1/2 Sq. Dr. Socket 22mm 6 point Length 29mm Z-series

Ko-ken 4400MZ-22 1/2 Sq. Dr. Socket 22mm 6 point Length 29mm Z-series

SKU: KK-4400MZ-22
MPN: 4400MZ-22

Save $2.98
Ko-ken 4400MZ-24 1/2 Sq. Dr. Socket 24mm 6 point Length 29mm Z-series

Ko-ken 4400MZ-24 1/2 Sq. Dr. Socket 24mm 6 point Length 29mm Z-series

SKU: KK-4400MZ-24
MPN: 4400MZ-24

Save $3.43
Ko-ken 4400MZ-27 1/2 Sq. Dr. Socket 27mm 6 point Length 30mm Z-series

Ko-ken 4400MZ-27 1/2 Sq. Dr. Socket 27mm 6 point Length 30mm Z-series

SKU: KK-4400MZ-27
MPN: 4400MZ-27

Save $3.84
Ko-ken 4400MZ-30 1/2 Sq. Dr. Socket 30mm 6 point Length 31mm Z-series

Ko-ken 4400MZ-30 1/2 Sq. Dr. Socket 30mm 6 point Length 31mm Z-series

SKU: KK-4400MZ-30
MPN: 4400MZ-30

Save $4.07