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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 4405M-8 1/2 Sq. Dr. Socket 8mm 12 point Length 36mm

Ko-ken 4405M-8 1/2 Sq. Dr. Socket 8mm 12 point Length 36mm

SKU: KK-4405M-8
MPN: 4405M-8

Save $1.39
Ko-ken 4405M-9 1/2 Sq. Dr. Socket 9mm 12 point Length 37mm

Ko-ken 4405M-9 1/2 Sq. Dr. Socket 9mm 12 point Length 37mm

SKU: KK-4405M-9
MPN: 4405M-9

Save $1.39
Ko-ken 4405W-1/2 1/2 Sq. Dr. Socket Whitworth 1/2 12 point Length 40mm

Ko-ken 4405W-1/2 1/2 Sq. Dr. Socket Whitworth 1/2 12 point Length 40mm

SKU: KK-4405W-1/2
MPN: 4405W-1/2

Save $2.66
Ko-ken 4405W-1/4 1/2 Sq. Dr. Socket Whitworth 1/4 12 point Length 37mm

Ko-ken 4405W-1/4 1/2 Sq. Dr. Socket Whitworth 1/4 12 point Length 37mm

SKU: KK-4405W-1/4
MPN: 4405W-1/4

Save $1.81
Ko-ken 4405W-11/16 1/2 Sq. Dr. Socket Whitworth 11/16 12 point Length 46mm

Ko-ken 4405W-11/16 1/2 Sq. Dr. Socket Whitworth 11/16 12 point Length 46mm

SKU: KK-4405W-11/16
MPN: 4405W-11/16

Save $4.55
Ko-ken 4405W-3/16 1/2 Sq. Dr. Socket Whitworth 3/16 12 point Length 37mm

Ko-ken 4405W-3/16 1/2 Sq. Dr. Socket Whitworth 3/16 12 point Length 37mm

SKU: KK-4405W-3/16
MPN: 4405W-3/16

Save $1.81
Ko-ken 4405W-3/4 1/2 Sq. Dr. Socket Whitworth 3/4 12 point Length 47mm

Ko-ken 4405W-3/4 1/2 Sq. Dr. Socket Whitworth 3/4 12 point Length 47mm

SKU: KK-4405W-3/4
MPN: 4405W-3/4

Save $6.68
Ko-ken 4405W-3/8 1/2 Sq. Dr. Socket Whitworth 3/8 12 point Length 37mm

Ko-ken 4405W-3/8 1/2 Sq. Dr. Socket Whitworth 3/8 12 point Length 37mm

SKU: KK-4405W-3/8
MPN: 4405W-3/8

Save $2.05
Ko-ken 4405W-5/16 1/2 Sq. Dr. Socket Whitworth 5/16 12 point Length 37mm

Ko-ken 4405W-5/16 1/2 Sq. Dr. Socket Whitworth 5/16 12 point Length 37mm

SKU: KK-4405W-5/16
MPN: 4405W-5/16

Save $1.90
Ko-ken 4405W-5/8 1/2 Sq. Dr. Socket Whitworth 5/8 12 point Length 43mm

Ko-ken 4405W-5/8 1/2 Sq. Dr. Socket Whitworth 5/8 12 point Length 43mm

SKU: KK-4405W-5/8
MPN: 4405W-5/8

Save $3.98
Ko-ken 4405W-7/16 1/2 Sq. Dr. Socket Whitworth 7/16 12 point Length 38mm

Ko-ken 4405W-7/16 1/2 Sq. Dr. Socket Whitworth 7/16 12 point Length 38mm

SKU: KK-4405W-7/16
MPN: 4405W-7/16

Save $2.46
Ko-ken 4405W-9/16 1/2 Sq. Dr. Socket Whitworth 9/16 12 point Length 42mm

Ko-ken 4405W-9/16 1/2 Sq. Dr. Socket Whitworth 9/16 12 point Length 42mm

SKU: KK-4405W-9/16
MPN: 4405W-9/16

Save $3.46
Ko-ken 4410M-10 1/2 Sq. Dr. Socket 10mm Surface Length 37mm

Ko-ken 4410M-10 1/2 Sq. Dr. Socket 10mm Surface Length 37mm

SKU: KK-4410M-10
MPN: 4410M-10

Save $1.47
Ko-ken 4410M-11 1/2 Sq. Dr. Socket 11mm Surface Length 37mm

Ko-ken 4410M-11 1/2 Sq. Dr. Socket 11mm Surface Length 37mm

SKU: KK-4410M-11
MPN: 4410M-11

Save $1.47
Ko-ken 4410M-12 1/2 Sq. Dr. Socket 12mm Surface Length 37mm

Ko-ken 4410M-12 1/2 Sq. Dr. Socket 12mm Surface Length 37mm

SKU: KK-4410M-12
MPN: 4410M-12

Save $1.47
Ko-ken 4410M-13 1/2 Sq. Dr. Socket 13mm Surface Length 37mm

Ko-ken 4410M-13 1/2 Sq. Dr. Socket 13mm Surface Length 37mm

SKU: KK-4410M-13
MPN: 4410M-13

Save $1.47
Ko-ken 4410M-14 1/2 Sq. Dr. Socket 14mm Surface Length 37mm

Ko-ken 4410M-14 1/2 Sq. Dr. Socket 14mm Surface Length 37mm

SKU: KK-4410M-14
MPN: 4410M-14

Save $1.51
Ko-ken 4410M-15 1/2 Sq. Dr. Socket 15mm Surface Length 37mm

Ko-ken 4410M-15 1/2 Sq. Dr. Socket 15mm Surface Length 37mm

SKU: KK-4410M-15
MPN: 4410M-15

Save $1.54
Ko-ken 4410M-16 1/2 Sq. Dr. Socket 16mm Surface Length 37mm

Ko-ken 4410M-16 1/2 Sq. Dr. Socket 16mm Surface Length 37mm

SKU: KK-4410M-16
MPN: 4410M-16

Save $1.54
Ko-ken 4410M-17 1/2 Sq. Dr. Socket 17mm Surface Length 37mm

Ko-ken 4410M-17 1/2 Sq. Dr. Socket 17mm Surface Length 37mm

SKU: KK-4410M-17
MPN: 4410M-17

Save $1.54
Ko-ken 4410M-18 1/2 Sq. Dr. Socket 18mm Surface Length 37mm

Ko-ken 4410M-18 1/2 Sq. Dr. Socket 18mm Surface Length 37mm

SKU: KK-4410M-18
MPN: 4410M-18

Save $1.67
Ko-ken 4410M-19 1/2 Sq. Dr. Socket 19mm Surface Length 38mm

Ko-ken 4410M-19 1/2 Sq. Dr. Socket 19mm Surface Length 38mm

SKU: KK-4410M-19
MPN: 4410M-19

Save $1.67
Ko-ken 4410M-20 1/2 Sq. Dr. Socket 20mm Surface Length 38mm

Ko-ken 4410M-20 1/2 Sq. Dr. Socket 20mm Surface Length 38mm

SKU: KK-4410M-20
MPN: 4410M-20

Save $1.99
Ko-ken 4410M-21 1/2 Sq. Dr. Socket 21mm Surface Length 38mm

Ko-ken 4410M-21 1/2 Sq. Dr. Socket 21mm Surface Length 38mm

SKU: KK-4410M-21
MPN: 4410M-21

Save $1.99