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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 4300M-8 1/2 Sq. Dr. Socket 8mm 6 point Length 77mm

Ko-ken 4300M-8 1/2 Sq. Dr. Socket 8mm 6 point Length 77mm

SKU: KK-4300M-8
MPN: 4300M-8

Save $3.40
Ko-ken 4300M-8(L120) 1/2 Sq. Dr. Socket 8mm 6 point Length 120mm

Ko-ken 4300M-8(L120) 1/2 Sq. Dr. Socket 8mm 6 point Length 120mm

SKU: KK-4300M-8(L120)
MPN: 4300M-8(L120)

Save $10.31
Ko-ken 4300M-9 1/2 Sq. Dr. Socket 9mm 6 point Length 77mm

Ko-ken 4300M-9 1/2 Sq. Dr. Socket 9mm 6 point Length 77mm

SKU: KK-4300M-9
MPN: 4300M-9

Save $3.40
Ko-ken 4300PMZ.65-17 1/2 Sq. Dr. Wheel Nut Socket 17mm Extra Thin walled Length 65mm Color coded Protector

Ko-ken 4300PMZ.65-17 1/2 Sq. Dr. Wheel Nut Socket 17mm Extra Thin walled Length 65mm Color coded Protector

SKU: KK-4300PMZ.65-17
MPN: 4300PMZ.65-17

Save $7.38
Ko-ken 4300PMZ.65-19 1/2 Sq. Dr. Wheel Nut Socket 19mm Extra Thin walled Length 65mm Color coded Protector

Ko-ken 4300PMZ.65-19 1/2 Sq. Dr. Wheel Nut Socket 19mm Extra Thin walled Length 65mm Color coded Protector

SKU: KK-4300PMZ.65-19
MPN: 4300PMZ.65-19

Save $7.38
Ko-ken 4300PMZ.65-21 1/2 Sq. Dr. Wheel Nut Socket 21mm Extra Thin walled Length 65mm Color coded Protector

Ko-ken 4300PMZ.65-21 1/2 Sq. Dr. Wheel Nut Socket 21mm Extra Thin walled Length 65mm Color coded Protector

SKU: KK-4300PMZ.65-21
MPN: 4300PMZ.65-21

Save $7.78
Ko-ken 4300S-16 1/2 Sq. Dr. Spark Plug Socket 16mm 6 point Length 70mm Rubber

Ko-ken 4300S-16 1/2 Sq. Dr. Spark Plug Socket 16mm 6 point Length 70mm Rubber

SKU: KK-4300S-16
MPN: 4300S-16

Save $3.91
Ko-ken 4300S-18 1/2 Sq. Dr. Spark Plug Socket 18mm 6 point Length 70mm Rubber

Ko-ken 4300S-18 1/2 Sq. Dr. Spark Plug Socket 18mm 6 point Length 70mm Rubber

SKU: KK-4300S-18
MPN: 4300S-18

Save $4.13
Ko-ken 4300S-20.8 1/2 Sq. Dr. Spark Plug Socket 20.8mm 6 point Length 70mm Rubber

Ko-ken 4300S-20.8 1/2 Sq. Dr. Spark Plug Socket 20.8mm 6 point Length 70mm Rubber

SKU: KK-4300S-20.8
MPN: 4300S-20.8

Save $4.17
Ko-ken 4305A-1 1/2 Sq. Dr. Socket 1 12 point Length 77mm

Ko-ken 4305A-1 1/2 Sq. Dr. Socket 1 12 point Length 77mm

SKU: KK-4305A-1
MPN: 4305A-1

Save $5.57
Ko-ken 4305A-1.1/16 1/2 Sq. Dr. Socket 1.1/16 12 point Length 77mm

Ko-ken 4305A-1.1/16 1/2 Sq. Dr. Socket 1.1/16 12 point Length 77mm

SKU: KK-4305A-1.1/16
MPN: 4305A-1.1/16

Save $5.57
Ko-ken 4305A-1.1/2 1/2 Sq. Dr. Socket 1.1/2 12 point Length 77mm

Ko-ken 4305A-1.1/2 1/2 Sq. Dr. Socket 1.1/2 12 point Length 77mm

SKU: KK-4305A-1.1/2
MPN: 4305A-1.1/2

Save $13.01
Ko-ken 4305A-1.1/4 1/2 Sq. Dr. Socket 1.1/4 12 point Length 77mm

Ko-ken 4305A-1.1/4 1/2 Sq. Dr. Socket 1.1/4 12 point Length 77mm

SKU: KK-4305A-1.1/4
MPN: 4305A-1.1/4

Save $7.13
Ko-ken 4305A-1.1/8 1/2 Sq. Dr. Socket 1.1/8 12 point Length 77mm

Ko-ken 4305A-1.1/8 1/2 Sq. Dr. Socket 1.1/8 12 point Length 77mm

SKU: KK-4305A-1.1/8
MPN: 4305A-1.1/8

Save $7.13
Ko-ken 4305A-1.13/16 1/2 Sq. Dr. Socket 1.13/16 12 point Length 77mm

Ko-ken 4305A-1.13/16 1/2 Sq. Dr. Socket 1.13/16 12 point Length 77mm

SKU: KK-4305A-1.13/16
MPN: 4305A-1.13/16

Save $19.83
Ko-ken 4305A-1.3/16 1/2 Sq. Dr. Socket 1.3/16 12 point Length 77mm

Ko-ken 4305A-1.3/16 1/2 Sq. Dr. Socket 1.3/16 12 point Length 77mm

SKU: KK-4305A-1.3/16
MPN: 4305A-1.3/16

Save $7.13
Ko-ken 4305A-1.3/8 1/2 Sq. Dr. Socket 1.3/8 12 point Length 77mm

Ko-ken 4305A-1.3/8 1/2 Sq. Dr. Socket 1.3/8 12 point Length 77mm

SKU: KK-4305A-1.3/8
MPN: 4305A-1.3/8

Save $11.01
Ko-ken 4305A-1.5/16 1/2 Sq. Dr. Socket 1.5/16 12 point Length 77mm

Ko-ken 4305A-1.5/16 1/2 Sq. Dr. Socket 1.5/16 12 point Length 77mm

SKU: KK-4305A-1.5/16
MPN: 4305A-1.5/16

Save $11.01
Ko-ken 4305A-1.7/16 1/2 Sq. Dr. Socket 1.7/16 12 point Length 77mm

Ko-ken 4305A-1.7/16 1/2 Sq. Dr. Socket 1.7/16 12 point Length 77mm

SKU: KK-4305A-1.7/16
MPN: 4305A-1.7/16

Save $12.06
Ko-ken 4305A-1/2 1/2 Sq. Dr. Socket 1/2 12 point Length 77mm

Ko-ken 4305A-1/2 1/2 Sq. Dr. Socket 1/2 12 point Length 77mm

SKU: KK-4305A-1/2
MPN: 4305A-1/2

Save $3.73
Ko-ken 4305A-11/16 1/2 Sq. Dr. Socket 11/16 12 point Length 77mm

Ko-ken 4305A-11/16 1/2 Sq. Dr. Socket 11/16 12 point Length 77mm

SKU: KK-4305A-11/16
MPN: 4305A-11/16

Save $4.10
Ko-ken 4305A-13/16 1/2 Sq. Dr. Socket 13/16 12 point Length 77mm

Ko-ken 4305A-13/16 1/2 Sq. Dr. Socket 13/16 12 point Length 77mm

SKU: KK-4305A-13/16
MPN: 4305A-13/16

Save $4.79
Ko-ken 4305A-15/16 1/2 Sq. Dr. Socket 15/16 12 point Length 77mm

Ko-ken 4305A-15/16 1/2 Sq. Dr. Socket 15/16 12 point Length 77mm

SKU: KK-4305A-15/16
MPN: 4305A-15/16

Save $5.42
Ko-ken 4305A-19/32 1/2 Sq. Dr. Socket 19/32 12 point Length 77mm

Ko-ken 4305A-19/32 1/2 Sq. Dr. Socket 19/32 12 point Length 77mm

SKU: KK-4305A-19/32
MPN: 4305A-19/32

Save $3.73