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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 3300CZ-16 3/8 Sq. Dr. Socket 16mm 6 point Length 70mm Spark Plug Socket Clip type

Ko-ken 3300CZ-16 3/8 Sq. Dr. Socket 16mm 6 point Length 70mm Spark Plug Socket Clip type

SKU: KK-3300CZ-16
MPN: 3300CZ-16

Save $6.08
Ko-ken 3300CZ-18 3/8 Sq. Dr. Socket 18mm 6 point Length 70mm Spark Plug Socket Clip type

Ko-ken 3300CZ-18 3/8 Sq. Dr. Socket 18mm 6 point Length 70mm Spark Plug Socket Clip type

SKU: KK-3300CZ-18
MPN: 3300CZ-18

Save $6.47
Ko-ken 3300CZ-20.8 3/8 Sq. Dr. Socket 20.8mm 6 point Length 70mm Spark Plug Socket Clip type

Ko-ken 3300CZ-20.8 3/8 Sq. Dr. Socket 20.8mm 6 point Length 70mm Spark Plug Socket Clip type

SKU: KK-3300CZ-20.8
MPN: 3300CZ-20.8

Save $7.58
Ko-ken 3300FN-10 3/8 Sq. Dr. Socket 10mm Flare Nut Length 53mm

Ko-ken 3300FN-10 3/8 Sq. Dr. Socket 10mm Flare Nut Length 53mm

SKU: KK-3300FN-10
MPN: 3300FN-10

Save $11.01
Ko-ken 3300FN-11 3/8 Sq. Dr. Socket 11mm Flare Nut Length 53mm

Ko-ken 3300FN-11 3/8 Sq. Dr. Socket 11mm Flare Nut Length 53mm

SKU: KK-3300FN-11
MPN: 3300FN-11

Save $11.01
Ko-ken 3300FN-12 3/8 Sq. Dr. Socket 12mm Flare Nut Length 53mm

Ko-ken 3300FN-12 3/8 Sq. Dr. Socket 12mm Flare Nut Length 53mm

SKU: KK-3300FN-12
MPN: 3300FN-12

Save $11.01
Ko-ken 3300FN-13 3/8 Sq. Dr. Socket 13mm Flare Nut Length 62mm

Ko-ken 3300FN-13 3/8 Sq. Dr. Socket 13mm Flare Nut Length 62mm

SKU: KK-3300FN-13
MPN: 3300FN-13

Save $11.33
Ko-ken 3300FN-14 3/8 Sq. Dr. Socket 14mm Flare Nut Length 62mm

Ko-ken 3300FN-14 3/8 Sq. Dr. Socket 14mm Flare Nut Length 62mm

SKU: KK-3300FN-14
MPN: 3300FN-14

Save $11.54
Ko-ken 3300FN-15 3/8 Sq. Dr. Socket 15mm Flare Nut Length 70mm

Ko-ken 3300FN-15 3/8 Sq. Dr. Socket 15mm Flare Nut Length 70mm

SKU: KK-3300FN-15
MPN: 3300FN-15

Save $11.54
Ko-ken 3300FN-16 3/8 Sq. Dr. Socket 16mm Flare Nut Length 70mm

Ko-ken 3300FN-16 3/8 Sq. Dr. Socket 16mm Flare Nut Length 70mm

SKU: KK-3300FN-16
MPN: 3300FN-16

Save $11.85
Ko-ken 3300FN-17 3/8 Sq. Dr. Socket 17mm Flare Nut Length 80mm

Ko-ken 3300FN-17 3/8 Sq. Dr. Socket 17mm Flare Nut Length 80mm

SKU: KK-3300FN-17
MPN: 3300FN-17

Save $11.85
Ko-ken 3300FN-18 3/8 Sq. Dr. Socket 18mm Flare Nut Length 80mm

Ko-ken 3300FN-18 3/8 Sq. Dr. Socket 18mm Flare Nut Length 80mm

SKU: KK-3300FN-18
MPN: 3300FN-18

Save $12.58
Ko-ken 3300FN-19 3/8 Sq. Dr. Socket 19mm Flare Nut Length 80mm

Ko-ken 3300FN-19 3/8 Sq. Dr. Socket 19mm Flare Nut Length 80mm

SKU: KK-3300FN-19
MPN: 3300FN-19

Save $12.58
Ko-ken 3300FN-22 3/8 Sq. Dr. Socket 22mm Flare Nut Length 80mm

Ko-ken 3300FN-22 3/8 Sq. Dr. Socket 22mm Flare Nut Length 80mm

SKU: KK-3300FN-22
MPN: 3300FN-22

Save $15.21
Ko-ken 3300FN-24 3/8 Sq. Dr. Socket 24mm Flare Nut Length 80mm

Ko-ken 3300FN-24 3/8 Sq. Dr. Socket 24mm Flare Nut Length 80mm

SKU: KK-3300FN-24
MPN: 3300FN-24

Save $15.74
Ko-ken 3300FN-8 3/8 Sq. Dr. Socket 8mm Flare Nut Length 53mm

Ko-ken 3300FN-8 3/8 Sq. Dr. Socket 8mm Flare Nut Length 53mm

SKU: KK-3300FN-8
MPN: 3300FN-8

Save $11.01
Ko-ken 3300FN-9 3/8 Sq. Dr. Socket 9mm Flare Nut Length 53mm

Ko-ken 3300FN-9 3/8 Sq. Dr. Socket 9mm Flare Nut Length 53mm

SKU: KK-3300FN-9
MPN: 3300FN-9

Save $11.01
Ko-ken 3300M-10 3/8 Sq. Dr. Socket 10mm 6 point Length 55mm

Ko-ken 3300M-10 3/8 Sq. Dr. Socket 10mm 6 point Length 55mm

SKU: KK-3300M-10
MPN: 3300M-10

Save $2.25
Ko-ken 3300M-10(L120) 3/8 Sq. Dr. Socket 10mm 6 point Length 120mm

Ko-ken 3300M-10(L120) 3/8 Sq. Dr. Socket 10mm 6 point Length 120mm

SKU: KK-3300M-10(L120)
MPN: 3300M-10(L120)

Save $8.82
Ko-ken 3300M-11 3/8 Sq. Dr. Socket 11mm 6 point Length 55mm

Ko-ken 3300M-11 3/8 Sq. Dr. Socket 11mm 6 point Length 55mm

SKU: KK-3300M-11
MPN: 3300M-11

Save $2.25
Ko-ken 3300M-12 3/8 Sq. Dr. Socket 12mm 6 point Length 55mm

Ko-ken 3300M-12 3/8 Sq. Dr. Socket 12mm 6 point Length 55mm

SKU: KK-3300M-12
MPN: 3300M-12

Save $2.25
Ko-ken 3300M-12(L120) 3/8 Sq. Dr. Socket 12mm 6 point Length 120mm

Ko-ken 3300M-12(L120) 3/8 Sq. Dr. Socket 12mm 6 point Length 120mm

SKU: KK-3300M-12(L120)
MPN: 3300M-12(L120)

Save $8.82
Ko-ken 3300M-13 3/8 Sq. Dr. Socket 13mm 6 point Length 55mm

Ko-ken 3300M-13 3/8 Sq. Dr. Socket 13mm 6 point Length 55mm

SKU: KK-3300M-13
MPN: 3300M-13

Save $2.39
Ko-ken 3300M-13(L120) 3/8 Sq. Dr. Socket 13mm 6 point Length 120mm

Ko-ken 3300M-13(L120) 3/8 Sq. Dr. Socket 13mm 6 point Length 120mm

SKU: KK-3300M-13(L120)
MPN: 3300M-13(L120)

Save $9.15