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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 3400MZ-22 3/8 Sq. Dr. Socket 22mm 6 point Length 23mm Z-series

Ko-ken 3400MZ-22 3/8 Sq. Dr. Socket 22mm 6 point Length 23mm Z-series

SKU: KK-3400MZ-22
MPN: 3400MZ-22

Save $2.98
Ko-ken 3400MZ-5.5 3/8 Sq. Dr. Socket 5.5mm 6 point Length 19mm Z-series

Ko-ken 3400MZ-5.5 3/8 Sq. Dr. Socket 5.5mm 6 point Length 19mm Z-series

SKU: KK-3400MZ-5.5
MPN: 3400MZ-5.5

Save $1.57
Ko-ken 3400MZ-6 3/8 Sq. Dr. Socket 6mm 6 point Length 19mm Z-series

Ko-ken 3400MZ-6 3/8 Sq. Dr. Socket 6mm 6 point Length 19mm Z-series

SKU: KK-3400MZ-6
MPN: 3400MZ-6

Save $1.57
Ko-ken 3400MZ-7 3/8 Sq. Dr. Socket 7mm 6 point Length 19mm Z-series

Ko-ken 3400MZ-7 3/8 Sq. Dr. Socket 7mm 6 point Length 19mm Z-series

SKU: KK-3400MZ-7
MPN: 3400MZ-7

Save $1.57
Ko-ken 3400MZ-8 3/8 Sq. Dr. Socket 8mm 6 point Length 20mm Z-series

Ko-ken 3400MZ-8 3/8 Sq. Dr. Socket 8mm 6 point Length 20mm Z-series

SKU: KK-3400MZ-8
MPN: 3400MZ-8

Save $1.57
Ko-ken 3400W-1/2 3/8 Sq. Dr. Socket Whitworth 1/2 6 point Length 33mm

Ko-ken 3400W-1/2 3/8 Sq. Dr. Socket Whitworth 1/2 6 point Length 33mm

SKU: KK-3400W-1/2
MPN: 3400W-1/2

Save $2.66
Ko-ken 3400W-1/4 3/8 Sq. Dr. Socket Whitworth 1/4 6 point Length 26mm

Ko-ken 3400W-1/4 3/8 Sq. Dr. Socket Whitworth 1/4 6 point Length 26mm

SKU: KK-3400W-1/4
MPN: 3400W-1/4

Save $1.72
Ko-ken 3400W-1/8 3/8 Sq. Dr. Socket Whitworth 1/8 6 point Length 26mm

Ko-ken 3400W-1/8 3/8 Sq. Dr. Socket Whitworth 1/8 6 point Length 26mm

SKU: KK-3400W-1/8
MPN: 3400W-1/8

Save $1.41
Ko-ken 3400W-3/16 3/8 Sq. Dr. Socket Whitworth 3/16 6 point Length 26mm

Ko-ken 3400W-3/16 3/8 Sq. Dr. Socket Whitworth 3/16 6 point Length 26mm

SKU: KK-3400W-3/16
MPN: 3400W-3/16

Save $1.41
Ko-ken 3400W-3/8 3/8 Sq. Dr. Socket Whitworth 3/8 6 point Length 30mm

Ko-ken 3400W-3/8 3/8 Sq. Dr. Socket Whitworth 3/8 6 point Length 30mm

SKU: KK-3400W-3/8
MPN: 3400W-3/8

Save $1.96
Ko-ken 3400W-5/16 3/8 Sq. Dr. Socket Whitworth 5/16 6 point Length 28mm

Ko-ken 3400W-5/16 3/8 Sq. Dr. Socket Whitworth 5/16 6 point Length 28mm

SKU: KK-3400W-5/16
MPN: 3400W-5/16

Save $1.90
Ko-ken 3400W-7/16 3/8 Sq. Dr. Socket Whitworth 7/16 6 point Length 32mm

Ko-ken 3400W-7/16 3/8 Sq. Dr. Socket Whitworth 7/16 6 point Length 32mm

SKU: KK-3400W-7/16
MPN: 3400W-7/16

Save $2.41
Ko-ken 3400W-9/16 3/8 Sq. Dr. Socket Whitworth 9/16 6 point Length 35mm

Ko-ken 3400W-9/16 3/8 Sq. Dr. Socket Whitworth 9/16 6 point Length 35mm

SKU: KK-3400W-9/16
MPN: 3400W-9/16

Save $3.62
Ko-ken 3405A-1 3/8 Sq. Dr. Socket 1 12 point Length 35mm

Ko-ken 3405A-1 3/8 Sq. Dr. Socket 1 12 point Length 35mm

SKU: KK-3405A-1
MPN: 3405A-1

Save $3.07
Ko-ken 3405A-1/2 3/8 Sq. Dr. Socket 1/2 12 point Length 26mm

Ko-ken 3405A-1/2 3/8 Sq. Dr. Socket 1/2 12 point Length 26mm

SKU: KK-3405A-1/2
MPN: 3405A-1/2

Save $1.45
Ko-ken 3405A-1/4 3/8 Sq. Dr. Socket 1/4 12 point Length 26mm

Ko-ken 3405A-1/4 3/8 Sq. Dr. Socket 1/4 12 point Length 26mm

SKU: KK-3405A-1/4
MPN: 3405A-1/4

Save $1.20
Ko-ken 3405A-11/16 3/8 Sq. Dr. Socket 11/16 12 point Length 30mm

Ko-ken 3405A-11/16 3/8 Sq. Dr. Socket 11/16 12 point Length 30mm

SKU: KK-3405A-11/16
MPN: 3405A-11/16

Save $1.66
Ko-ken 3405A-11/32 3/8 Sq. Dr. Socket 11/32 12 point Length 26mm

Ko-ken 3405A-11/32 3/8 Sq. Dr. Socket 11/32 12 point Length 26mm

SKU: KK-3405A-11/32
MPN: 3405A-11/32

Save $1.20
Ko-ken 3405A-13/16 3/8 Sq. Dr. Socket 13/16 12 point Length 32mm

Ko-ken 3405A-13/16 3/8 Sq. Dr. Socket 13/16 12 point Length 32mm

SKU: KK-3405A-13/16
MPN: 3405A-13/16

Save $2.05
Ko-ken 3405A-13/32 3/8 Sq. Dr. Socket 13/32 12 point Length 26mm

Ko-ken 3405A-13/32 3/8 Sq. Dr. Socket 13/32 12 point Length 26mm

SKU: KK-3405A-13/32
MPN: 3405A-13/32

Save $1.20
Ko-ken 3405A-15/16 3/8 Sq. Dr. Socket 15/16 12 point Length 34mm

Ko-ken 3405A-15/16 3/8 Sq. Dr. Socket 15/16 12 point Length 34mm

SKU: KK-3405A-15/16
MPN: 3405A-15/16

Save $2.25
Ko-ken 3405A-19/32 3/8 Sq. Dr. Socket 19/32 12 point Length 28mm

Ko-ken 3405A-19/32 3/8 Sq. Dr. Socket 19/32 12 point Length 28mm

SKU: KK-3405A-19/32
MPN: 3405A-19/32

Save $1.61
Ko-ken 3405A-25/32 3/8 Sq. Dr. Socket 25/32 12 point Length 31mm

Ko-ken 3405A-25/32 3/8 Sq. Dr. Socket 25/32 12 point Length 31mm

SKU: KK-3405A-25/32
MPN: 3405A-25/32

Save $2.05
Ko-ken 3405A-3/16 3/8 Sq. Dr. Socket 3/16 12 point Length 26mm

Ko-ken 3405A-3/16 3/8 Sq. Dr. Socket 3/16 12 point Length 26mm

SKU: KK-3405A-3/16
MPN: 3405A-3/16

Save $1.20