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.
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 3350M-13 3/8 Sq. Dr. Socket 13mm Nut Grip Length 55mm
SKU: KK-3350M-13
MPN: 3350M-13
Ko-ken 3350M-14 3/8 Sq. Dr. Socket 14mm Nut Grip Length 55mm
SKU: KK-3350M-14
MPN: 3350M-14
Ko-ken 3350M-8 3/8 Sq. Dr. Socket 8mm Nut Grip Length 55mm
SKU: KK-3350M-8
MPN: 3350M-8
Ko-ken 3350M/2-L120 3/8 Sq. Dr. Socket set 10mm, 12mm Nut Grip Length 120mm 2 pieces
SKU: KK-3350M/2-L120
MPN: 3350M/2-L120
Ko-ken 3350X-10 3/8 Sq. Dr. Socket 10mm Nut Grip Length 40mm
SKU: KK-3350X-10
MPN: 3350X-10
Ko-ken 3350X-12 3/8 Sq. Dr. Socket 12mm Nut Grip Length 40mm
SKU: KK-3350X-12
MPN: 3350X-12
Ko-ken 3350X-14 3/8 Sq. Dr. Socket 14mm Nut Grip Length 40mm
SKU: KK-3350X-14
MPN: 3350X-14
Ko-ken 3350X-8 3/8 Sq. Dr. Socket 8mm Nut Grip Length 40mm
SKU: KK-3350X-8
MPN: 3350X-8
Ko-ken 3400A-1 3/8 Sq. Dr. Socket 1 6 point Length 35mm
SKU: KK-3400A-1
MPN: 3400A-1
Ko-ken 3400A-1/2 3/8 Sq. Dr. Socket 1/2 6 point Length 26mm
SKU: KK-3400A-1/2
MPN: 3400A-1/2
Ko-ken 3400A-1/4 3/8 Sq. Dr. Socket 1/4 6 point Length 26mm
SKU: KK-3400A-1/4
MPN: 3400A-1/4
Ko-ken 3400A-11/16 3/8 Sq. Dr. Socket 11/16 6 point Length 30mm
SKU: KK-3400A-11/16
MPN: 3400A-11/16
Ko-ken 3400A-11/32 3/8 Sq. Dr. Socket 11/32 6 point Length 26mm
SKU: KK-3400A-11/32
MPN: 3400A-11/32
Ko-ken 3400A-13/16 3/8 Sq. Dr. Socket 13/16 6 point Length 32mm
SKU: KK-3400A-13/16
MPN: 3400A-13/16
Ko-ken 3400A-13/32 3/8 Sq. Dr. Socket 13/32 6 point Length 26mm
SKU: KK-3400A-13/32
MPN: 3400A-13/32
Ko-ken 3400A-15/16 3/8 Sq. Dr. Socket 15/16 6 point Length 34mm
SKU: KK-3400A-15/16
MPN: 3400A-15/16
Ko-ken 3400A-19/32 3/8 Sq. Dr. Socket 19/32 6 point Length 28mm
SKU: KK-3400A-19/32
MPN: 3400A-19/32
Ko-ken 3400A-25/32 3/8 Sq. Dr. Socket 25/32 6 point Length 31mm
SKU: KK-3400A-25/32
MPN: 3400A-25/32
Ko-ken 3400A-3/16 3/8 Sq. Dr. Socket 3/16 6 point Length 26mm
SKU: KK-3400A-3/16
MPN: 3400A-3/16
Ko-ken 3400A-3/4 3/8 Sq. Dr. Socket 3/4 6 point Length 30mm
SKU: KK-3400A-3/4
MPN: 3400A-3/4
Ko-ken 3400A-3/8 3/8 Sq. Dr. Socket 3/8 6 point Length 26mm
SKU: KK-3400A-3/8
MPN: 3400A-3/8
Ko-ken 3400A-5/16 3/8 Sq. Dr. Socket 5/16 6 point Length 26mm
SKU: KK-3400A-5/16
MPN: 3400A-5/16
Ko-ken 3400A-5/8 3/8 Sq. Dr. Socket 5/8 6 point Length 28mm
SKU: KK-3400A-5/8
MPN: 3400A-5/8
Ko-ken 3400A-7/16 3/8 Sq. Dr. Socket 7/16 6 point Length 26mm
SKU: KK-3400A-7/16
MPN: 3400A-7/16