Cart 0

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 3410M-19 3/8 Sq. Dr. Socket 19mm Surface Length 30mm

Ko-ken 3410M-19 3/8 Sq. Dr. Socket 19mm Surface Length 30mm

SKU: KK-3410M-19
MPN: 3410M-19

Save $1.58
Ko-ken 3410M-20 3/8 Sq. Dr. Socket 20mm Surface Length 31mm

Ko-ken 3410M-20 3/8 Sq. Dr. Socket 20mm Surface Length 31mm

SKU: KK-3410M-20
MPN: 3410M-20

Save $1.95
Ko-ken 3410M-21 3/8 Sq. Dr. Socket 21mm Surface Length 32mm

Ko-ken 3410M-21 3/8 Sq. Dr. Socket 21mm Surface Length 32mm

SKU: KK-3410M-21
MPN: 3410M-21

Save $1.95
Ko-ken 3410M-22 3/8 Sq. Dr. Socket 22mm Surface Length 32mm

Ko-ken 3410M-22 3/8 Sq. Dr. Socket 22mm Surface Length 32mm

SKU: KK-3410M-22
MPN: 3410M-22

Save $2.03
Ko-ken 3410M-23 3/8 Sq. Dr. Socket 23mm Surface Length 33mm

Ko-ken 3410M-23 3/8 Sq. Dr. Socket 23mm Surface Length 33mm

SKU: KK-3410M-23
MPN: 3410M-23

Save $2.15
Ko-ken 3410M-24 3/8 Sq. Dr. Socket 24mm Surface Length 34mm

Ko-ken 3410M-24 3/8 Sq. Dr. Socket 24mm Surface Length 34mm

SKU: KK-3410M-24
MPN: 3410M-24

Save $2.15
Ko-ken 3410M-5.5 3/8 Sq. Dr. Socket 5.5mm Surface Length 26mm

Ko-ken 3410M-5.5 3/8 Sq. Dr. Socket 5.5mm Surface Length 26mm

SKU: KK-3410M-5.5
MPN: 3410M-5.5

Save $1.14
Ko-ken 3410M-6 3/8 Sq. Dr. Socket 6mm Surface Length 26mm

Ko-ken 3410M-6 3/8 Sq. Dr. Socket 6mm Surface Length 26mm

SKU: KK-3410M-6
MPN: 3410M-6

Save $1.14
Ko-ken 3410M-7 3/8 Sq. Dr. Socket 7mm Surface Length 26mm

Ko-ken 3410M-7 3/8 Sq. Dr. Socket 7mm Surface Length 26mm

SKU: KK-3410M-7
MPN: 3410M-7

Save $1.14
Ko-ken 3410M-8 3/8 Sq. Dr. Socket 8mm Surface Length 26mm

Ko-ken 3410M-8 3/8 Sq. Dr. Socket 8mm Surface Length 26mm

SKU: KK-3410M-8
MPN: 3410M-8

Save $1.14
Ko-ken 3410M-9 3/8 Sq. Dr. Socket 9mm Surface Length 26mm

Ko-ken 3410M-9 3/8 Sq. Dr. Socket 9mm Surface Length 26mm

SKU: KK-3410M-9
MPN: 3410M-9

Save $1.14
Ko-ken 3415A-1/2 3/8 Sq. Dr. Socket 1/2 Double Square Length 27mm

Ko-ken 3415A-1/2 3/8 Sq. Dr. Socket 1/2 Double Square Length 27mm

SKU: KK-3415A-1/2
MPN: 3415A-1/2

Save $2.27
Ko-ken 3415A-1/4 3/8 Sq. Dr. Socket 1/4 Double Square Length 26mm

Ko-ken 3415A-1/4 3/8 Sq. Dr. Socket 1/4 Double Square Length 26mm

SKU: KK-3415A-1/4
MPN: 3415A-1/4

Save $1.87
Ko-ken 3415A-11/32 3/8 Sq. Dr. Socket 11/32 Double Square Length 26mm

Ko-ken 3415A-11/32 3/8 Sq. Dr. Socket 11/32 Double Square Length 26mm

SKU: KK-3415A-11/32
MPN: 3415A-11/32

Save $2.14
Ko-ken 3415A-3/8 3/8 Sq. Dr. Socket 3/8 Double Square Length 26mm

Ko-ken 3415A-3/8 3/8 Sq. Dr. Socket 3/8 Double Square Length 26mm

SKU: KK-3415A-3/8
MPN: 3415A-3/8

Save $2.14
Ko-ken 3415A-5/16 3/8 Sq. Dr. Socket 5/16 Double Square Length 26mm

Ko-ken 3415A-5/16 3/8 Sq. Dr. Socket 5/16 Double Square Length 26mm

SKU: KK-3415A-5/16
MPN: 3415A-5/16

Save $1.87
Ko-ken 3415A-7/16 3/8 Sq. Dr. Socket 7/16 Double Square Length 27mm

Ko-ken 3415A-7/16 3/8 Sq. Dr. Socket 7/16 Double Square Length 27mm

SKU: KK-3415A-7/16
MPN: 3415A-7/16

Save $2.14
Ko-ken 3415M-10 3/8 Sq. Dr. Socket 10mm Double Square Length 26mm

Ko-ken 3415M-10 3/8 Sq. Dr. Socket 10mm Double Square Length 26mm

SKU: KK-3415M-10
MPN: 3415M-10

Save $1.94
Ko-ken 3415M-12 3/8 Sq. Dr. Socket 12mm Double Square Length 27mm

Ko-ken 3415M-12 3/8 Sq. Dr. Socket 12mm Double Square Length 27mm

SKU: KK-3415M-12
MPN: 3415M-12

Save $2.03
Ko-ken 3415M-13 3/8 Sq. Dr. Socket 13mm Double Square Length 27mm

Ko-ken 3415M-13 3/8 Sq. Dr. Socket 13mm Double Square Length 27mm

SKU: KK-3415M-13
MPN: 3415M-13

Save $3.43
Ko-ken 3415M-5.5 3/8 Sq. Dr. Socket 5.5mm Double Square Length 26mm

Ko-ken 3415M-5.5 3/8 Sq. Dr. Socket 5.5mm Double Square Length 26mm

SKU: KK-3415M-5.5
MPN: 3415M-5.5

Save $2.34
Ko-ken 3415M-6 3/8 Sq. Dr. Socket 6mm Double Square Length 26mm

Ko-ken 3415M-6 3/8 Sq. Dr. Socket 6mm Double Square Length 26mm

SKU: KK-3415M-6
MPN: 3415M-6

Save $1.69
Ko-ken 3415M-7 3/8 Sq. Dr. Socket 7mm Double Square Length 26mm

Ko-ken 3415M-7 3/8 Sq. Dr. Socket 7mm Double Square Length 26mm

SKU: KK-3415M-7
MPN: 3415M-7

Save $1.69
Ko-ken 3415M-8 3/8 Sq. Dr. Socket 8mm Double Square Length 26mm

Ko-ken 3415M-8 3/8 Sq. Dr. Socket 8mm Double Square Length 26mm

SKU: KK-3415M-8
MPN: 3415M-8

Save $1.69