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 4289M 1/2 Sq. Dr. Socket set 12 point 18 pieces
SKU: KK-4289M
MPN: 4289M
Ko-ken 4300A-1 1/2 Sq. Dr. Socket 1 6 point Length 77mm
SKU: KK-4300A-1
MPN: 4300A-1
Ko-ken 4300A-1.1/16 1/2 Sq. Dr. Socket 1.1/16 6 point Length 77mm
SKU: KK-4300A-1.1/16
MPN: 4300A-1.1/16
Ko-ken 4300A-1.1/2 1/2 Sq. Dr. Socket 1.1/2 6 point Length 77mm
SKU: KK-4300A-1.1/2
MPN: 4300A-1.1/2
Ko-ken 4300A-1.1/4 1/2 Sq. Dr. Socket 1.1/4 6 point Length 77mm
SKU: KK-4300A-1.1/4
MPN: 4300A-1.1/4
Ko-ken 4300A-1.1/8 1/2 Sq. Dr. Socket 1.1/8 6 point Length 77mm
SKU: KK-4300A-1.1/8
MPN: 4300A-1.1/8
Ko-ken 4300A-1.13/16 1/2 Sq. Dr. Socket 1.13/16 6 point Length 77mm
SKU: KK-4300A-1.13/16
MPN: 4300A-1.13/16
Ko-ken 4300A-1.3/16 1/2 Sq. Dr. Socket 1.3/16 6 point Length 77mm
SKU: KK-4300A-1.3/16
MPN: 4300A-1.3/16
Ko-ken 4300A-1.3/8 1/2 Sq. Dr. Socket 1.3/8 6 point Length 77mm
SKU: KK-4300A-1.3/8
MPN: 4300A-1.3/8
Ko-ken 4300A-1.5/16 1/2 Sq. Dr. Socket 1.5/16 6 point Length 77mm
SKU: KK-4300A-1.5/16
MPN: 4300A-1.5/16
Ko-ken 4300A-1.7/16 1/2 Sq. Dr. Socket 1.7/16 6 point Length 77mm
SKU: KK-4300A-1.7/16
MPN: 4300A-1.7/16
Ko-ken 4300A-1/2 1/2 Sq. Dr. Socket 1/2 6 point Length 77mm
SKU: KK-4300A-1/2
MPN: 4300A-1/2
Ko-ken 4300A-11/16 1/2 Sq. Dr. Socket 11/16 6 point Length 77mm
SKU: KK-4300A-11/16
MPN: 4300A-11/16
Ko-ken 4300A-13/16 1/2 Sq. Dr. Socket 13/16 6 point Length 77mm
SKU: KK-4300A-13/16
MPN: 4300A-13/16
Ko-ken 4300A-15/16 1/2 Sq. Dr. Socket 15/16 6 point Length 77mm
SKU: KK-4300A-15/16
MPN: 4300A-15/16
Ko-ken 4300A-19/32 1/2 Sq. Dr. Socket 19/32 6 point Length 77mm
SKU: KK-4300A-19/32
MPN: 4300A-19/32
Ko-ken 4300A-21/32 1/2 Sq. Dr. Socket 21/32 6 point Length 77mm
SKU: KK-4300A-21/32
MPN: 4300A-21/32
Ko-ken 4300A-25/32 1/2 Sq. Dr. Socket 25/32 6 point Length 77mm
SKU: KK-4300A-25/32
MPN: 4300A-25/32
Ko-ken 4300A-3/4 1/2 Sq. Dr. Socket 3/4 6 point Length 77mm
SKU: KK-4300A-3/4
MPN: 4300A-3/4
Ko-ken 4300A-3/8 1/2 Sq. Dr. Socket 3/8 6 point Length 77mm
SKU: KK-4300A-3/8
MPN: 4300A-3/8
Ko-ken 4300A-31/32 1/2 Sq. Dr. Socket 31/32 6 point Length 77mm
SKU: KK-4300A-31/32
MPN: 4300A-31/32
Ko-ken 4300A-5/16 1/2 Sq. Dr. Socket 5/16 6 point Length 77mm
SKU: KK-4300A-5/16
MPN: 4300A-5/16
Ko-ken 4300A-5/8 1/2 Sq. Dr. Socket 5/8 6 point Length 77mm
SKU: KK-4300A-5/8
MPN: 4300A-5/8
Ko-ken 4300A-7/16 1/2 Sq. Dr. Socket 7/16 6 point Length 77mm
SKU: KK-4300A-7/16
MPN: 4300A-7/16