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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 3752RK Renewal Kit for the 3752N, 3752J, 3757, 3776N, P, and J Ratchets

Ko-ken 3752RK Renewal Kit for the 3752N, 3752J, 3757, 3776N, P, and J Ratchets

SKU: KK-3752RK
MPN: 3752RK

Save $9.03
Ko-ken 3753BRK Renewal Kit for the 3753SMB, NB, PB, JB, also 3774NB, PB, JB, and JBL

Ko-ken 3753BRK Renewal Kit for the 3753SMB, NB, PB, JB, also 3774NB, PB, JB, and JBL

SKU: KK-3753BRK
MPN: 3753BRK

Save $7.58
Ko-ken 3753J 3/8 Sq. Dr. Ratchet Handle 24 teeth Length 200mm Plastic Handle

Ko-ken 3753J 3/8 Sq. Dr. Ratchet Handle 24 teeth Length 200mm Plastic Handle

SKU: KK-3753J
MPN: 3753J

Save $11.96
Ko-ken 3753JB 3/8 Sq. Dr. Ratchet Handle 24 teeth Length 200mm Push Button Plastic Handle

Ko-ken 3753JB 3/8 Sq. Dr. Ratchet Handle 24 teeth Length 200mm Push Button Plastic Handle

SKU: KK-3753JB
MPN: 3753JB

Save $14.47
Ko-ken 3753N 3/8 Sq. Dr. Ratchet Handle 24 teeth Length 200mm Metal Handle

Ko-ken 3753N 3/8 Sq. Dr. Ratchet Handle 24 teeth Length 200mm Metal Handle

SKU: KK-3753N
MPN: 3753N

Save $10.91
Ko-ken 3753NB 3/8 Sq. Dr. Ratchet Handle 24 teeth Length 200mm Push Button Metal Handle

Ko-ken 3753NB 3/8 Sq. Dr. Ratchet Handle 24 teeth Length 200mm Push Button Metal Handle

SKU: KK-3753NB
MPN: 3753NB

Save $13.85
Ko-ken 3753P 3/8 Sq. Dr. Ratchet Handle 24 teeth Length 200mm Polished Handle

Ko-ken 3753P 3/8 Sq. Dr. Ratchet Handle 24 teeth Length 200mm Polished Handle

SKU: KK-3753P
MPN: 3753P

Save $11.01
Ko-ken 3753P-250 3/8 Sq. Dr. Ratchet Handle 24 teeth Long Length 250mm Polished Handle

Ko-ken 3753P-250 3/8 Sq. Dr. Ratchet Handle 24 teeth Long Length 250mm Polished Handle

SKU: KK-3753P-250
MPN: 3753P-250

Save $15.31
Ko-ken 3753PB 3/8 Sq. Dr. Ratchet Handle 24 teeth Length 200mm Push Button Polished Handle

Ko-ken 3753PB 3/8 Sq. Dr. Ratchet Handle 24 teeth Length 200mm Push Button Polished Handle

SKU: KK-3753PB
MPN: 3753PB

Save $13.85
Ko-ken 3753RK Renewal Kit 3753SM, N, P, J, P-250 and D3753J also 3774PS, P-SR, N, P, J, NL, PL, and JL Ratchets

Ko-ken 3753RK Renewal Kit 3753SM, N, P, J, P-250 and D3753J also 3774PS, P-SR, N, P, J, NL, PL, and JL Ratchets

SKU: KK-3753RK
MPN: 3753RK

Save $5.87
Ko-ken 3753SM 3/8 Sq. Dr. Ratchet Handle 24 teeth Short Length 81mm

Ko-ken 3753SM 3/8 Sq. Dr. Ratchet Handle 24 teeth Short Length 81mm

SKU: KK-3753SM
MPN: 3753SM

Save $16.46
Ko-ken 3753SMB 3/8 Sq. Dr. Ratchet Handle 24 teeth Short Length 81mm Push Button

Ko-ken 3753SMB 3/8 Sq. Dr. Ratchet Handle 24 teeth Short Length 81mm Push Button

SKU: KK-3753SMB
MPN: 3753SMB

Save $18.99
Ko-ken 3755RK Renewal Kit

Ko-ken 3755RK Renewal Kit

SKU: KK-3755RK
MPN: 3755RK

Save $11.04
Ko-ken 3756Z 3/8 Sq. Dr. Quick Spinner 3/8 Square Length 25mm Z-series

Ko-ken 3756Z 3/8 Sq. Dr. Quick Spinner 3/8 Square Length 25mm Z-series

SKU: KK-3756Z
MPN: 3756Z

Save $4.73
Ko-ken 3756Z-1/2 3/8 Sq. Dr. Quick Spinner Adaptor 1/2 Square Length 29mm Z-series

Ko-ken 3756Z-1/2 3/8 Sq. Dr. Quick Spinner Adaptor 1/2 Square Length 29mm Z-series

SKU: KK-3756Z-1/2
MPN: 3756Z-1/2

Save $5.08
Ko-ken 3756ZS 3/8 Sq. Dr. Quick Spinner 3/8 Square Length 25mm Z-series

Ko-ken 3756ZS 3/8 Sq. Dr. Quick Spinner 3/8 Square Length 25mm Z-series

SKU: KK-3756ZS
MPN: 3756ZS

Save $4.73
Ko-ken 3760-1000 3/8 Sq. Dr. Extension Bar Length 1000mm

Ko-ken 3760-1000 3/8 Sq. Dr. Extension Bar Length 1000mm

SKU: KK-3760-1000
MPN: 3760-1000

Save $20.67
Ko-ken 3760-125 3/8 Sq. Dr. Extension Bar Length 125mm

Ko-ken 3760-125 3/8 Sq. Dr. Extension Bar Length 125mm

SKU: KK-3760-125
MPN: 3760-125

Save $2.68
Ko-ken 3760-150 3/8 Sq. Dr. Extension Bar Length 150mm

Ko-ken 3760-150 3/8 Sq. Dr. Extension Bar Length 150mm

SKU: KK-3760-150
MPN: 3760-150

Save $3.53
Ko-ken 3760-250 3/8 Sq. Dr. Extension Bar Length 250mm

Ko-ken 3760-250 3/8 Sq. Dr. Extension Bar Length 250mm

SKU: KK-3760-250
MPN: 3760-250

Save $4.53
Ko-ken 3760-300 3/8 Sq. Dr. Extension Bar Length 300mm

Ko-ken 3760-300 3/8 Sq. Dr. Extension Bar Length 300mm

SKU: KK-3760-300
MPN: 3760-300

Save $5.55
Ko-ken 3760-32 3/8 Sq. Dr. Extension Bar Length 32mm

Ko-ken 3760-32 3/8 Sq. Dr. Extension Bar Length 32mm

SKU: KK-3760-32
MPN: 3760-32

Save $2.53
Ko-ken 3760-400 3/8 Sq. Dr. Extension Bar Length 400mm

Ko-ken 3760-400 3/8 Sq. Dr. Extension Bar Length 400mm

SKU: KK-3760-400
MPN: 3760-400

Save $7.19
Ko-ken 3760-50 3/8 Sq. Dr. Extension Bar Length 50mm

Ko-ken 3760-50 3/8 Sq. Dr. Extension Bar Length 50mm

SKU: KK-3760-50
MPN: 3760-50

Save $2.56