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 4400A-1/2 1/2 Sq. Dr. Socket 1/2 6 point Length 37mm
SKU: KK-4400A-1/2
MPN: 4400A-1/2
Ko-ken 4400A-1/4 1/2 Sq. Dr. Socket 1/4 6 point Length 36mm
SKU: KK-4400A-1/4
MPN: 4400A-1/4
Ko-ken 4400A-11/16 1/2 Sq. Dr. Socket 11/16 6 point Length 37mm
SKU: KK-4400A-11/16
MPN: 4400A-11/16
Ko-ken 4400A-13/16 1/2 Sq. Dr. Socket 13/16 6 point Length 38mm
SKU: KK-4400A-13/16
MPN: 4400A-13/16
Ko-ken 4400A-15/16 1/2 Sq. Dr. Socket 15/16 6 point Length 42mm
SKU: KK-4400A-15/16
MPN: 4400A-15/16
Ko-ken 4400A-19/32 1/2 Sq. Dr. Socket 19/32 6 point Length 37mm
SKU: KK-4400A-19/32
MPN: 4400A-19/32
Ko-ken 4400A-21/32 1/2 Sq. Dr. Socket 21/32 6 point Length 37mm
SKU: KK-4400A-21/32
MPN: 4400A-21/32
Ko-ken 4400A-25/32 1/2 Sq. Dr. Socket 25/32 6 point Length 38mm
SKU: KK-4400A-25/32
MPN: 4400A-25/32
Ko-ken 4400A-3/4 1/2 Sq. Dr. Socket 3/4 6 point Length 38mm
SKU: KK-4400A-3/4
MPN: 4400A-3/4
Ko-ken 4400A-3/8 1/2 Sq. Dr. Socket 3/8 6 point Length 37mm
SKU: KK-4400A-3/8
MPN: 4400A-3/8
Ko-ken 4400A-31/32 1/2 Sq. Dr. Socket 31/32 6 point Length 42mm
SKU: KK-4400A-31/32
MPN: 4400A-31/32
Ko-ken 4400A-5/16 1/2 Sq. Dr. Socket 5/16 6 point Length 36mm
SKU: KK-4400A-5/16
MPN: 4400A-5/16
Ko-ken 4400A-5/8 1/2 Sq. Dr. Socket 5/8 6 point Length 37mm
SKU: KK-4400A-5/8
MPN: 4400A-5/8
Ko-ken 4400A-7/16 1/2 Sq. Dr. Socket 7/16 6 point Length 37mm
SKU: KK-4400A-7/16
MPN: 4400A-7/16
Ko-ken 4400A-7/8 1/2 Sq. Dr. Socket 7/8 6 point Length 40mm
SKU: KK-4400A-7/8
MPN: 4400A-7/8
Ko-ken 4400A-9/16 1/2 Sq. Dr. Socket 9/16 6 point Length 37mm
SKU: KK-4400A-9/16
MPN: 4400A-9/16
Ko-ken 4400LH-10S 1/2 Sq. Dr. Socket 10S Length 37mm
SKU: KK-4400LH-10S
MPN: 4400LH-10S
Ko-ken 4400LH-12S 1/2 Sq. Dr. Socket 12S Length 37mm
SKU: KK-4400LH-12S
MPN: 4400LH-12S
Ko-ken 4400LH-14S 1/2 Sq. Dr. Socket 14S Length 37mm
SKU: KK-4400LH-14S
MPN: 4400LH-14S
Ko-ken 4400LH-16S 1/2 Sq. Dr. Socket 16S Length 38mm
SKU: KK-4400LH-16S
MPN: 4400LH-16S
Ko-ken 4400LH-6S 1/2 Sq. Dr. Socket 6S Length 36mm
SKU: KK-4400LH-6S
MPN: 4400LH-6S
Ko-ken 4400LH-8S 1/2 Sq. Dr. Socket 8S Length 37mm
SKU: KK-4400LH-8S
MPN: 4400LH-8S
Ko-ken 4400M-10 1/2 Sq. Dr. Socket 10mm 6 point Length 37mm
SKU: KK-4400M-10
MPN: 4400M-10
Ko-ken 4400M-11 1/2 Sq. Dr. Socket 11mm 6 point Length 37mm
SKU: KK-4400M-11
MPN: 4400M-11