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 RS3305X/8 3/8 Sq. Dr. Socket set 8mm-19mm 12 point 200mm 8 pieces
SKU: KK-RS3305X/8
MPN: RS3305X/8
Ko-ken RS3305XA/9 3/8 Sq. Dr. Socket set 1/4-3/4 12 point 200mm 9 pieces
SKU: KK-RS3305XA/9
MPN: RS3305XA/9
Ko-ken RS3310M/12 3/8 Sq. Dr. Socket set 8mm-19mm Surface 300mm 12 pieces
SKU: KK-RS3310M/12
MPN: RS3310M/12
Ko-ken RS3325/9 3/8 Sq. Dr. Socket set TORX E4-E16 200mm 9 pieces
SKU: KK-RS3325/9
MPN: RS3325/9
Ko-ken RS3340M/8-L75 3/8 Sq. Dr. Universal Socket set 8mm-19mm 6 point 200mm 8 pieces
SKU: KK-RS3340M/8-L75
MPN: RS3340M/8-L75
Ko-ken RS3350M/5 3/8 Sq. Dr. Socket set 8mm-14mm Nut Grip 150mm 5 pieces
SKU: KK-RS3350M/5
MPN: RS3350M/5
Ko-ken RS3350X/4 3/8 Sq. Dr. Socket set 8mm-14mm Nut Grip 150mm 4 pieces
SKU: KK-RS3350X/4
MPN: RS3350X/4
Ko-ken RS3400A/9 3/8 Sq. Dr. Socket set 1/4-3/4 6 point 200mm 9 pieces
SKU: KK-RS3400A/9
MPN: RS3400A/9
Ko-ken RS3400LH/7 3/8 Sq. Dr. Socket set 5S-16S 150mm 7 pieces
SKU: KK-RS3400LH/7
MPN: RS3400LH/7
Ko-ken RS3400M/12 3/8 Sq. Dr. Socket set 8-19mm 6 point 300mm 12 pieces
SKU: KK-RS3400M/12
MPN: RS3400M/12
Ko-ken RS3400M/8 3/8 Sq. Dr. Socket set 8-19mm 6 point 200mm 8 pieces
SKU: KK-RS3400M/8
MPN: RS3400M/8
Ko-ken RS3400MZ/12 3/8 Sq. Dr. Socket set 7-19mm 6 point 300mm Z-series 12 pieces
SKU: KK-RS3400MZ/12
MPN: RS3400MZ/12
Ko-ken RS3400MZ/8 3/8 Sq. Dr. Socket set 8-19mm 6 point 200mm Z-series 8 pieces
SKU: KK-RS3400MZ/8
MPN: RS3400MZ/8
Ko-ken RS3400W/7 3/8 Sq. Dr. Socket set Whitworth 1/8-1/2 6 point 200mm 7 pieces
SKU: KK-RS3400W/7
MPN: RS3400W/7
Ko-ken RS3405A/9 3/8 Sq. Dr. Socket set 1/4-3/4 12 point 200mm 9 pieces
SKU: KK-RS3405A/9
MPN: RS3405A/9
Ko-ken RS3405M/12 3/8 Sq. Dr. Socket set 8-19mm 12 point 300mm 12 pieces
SKU: KK-RS3405M/12
MPN: RS3405M/12
Ko-ken RS3405M/8 3/8 Sq. Dr. Socket set 8-19mm 12 point 200mm 8 pieces
SKU: KK-RS3405M/8
MPN: RS3405M/8
Ko-ken RS3405W/7 3/8 Sq. Dr. Socket set Whitworth 1/8-1/2 12 point 200mm 7 pieces
SKU: KK-RS3405W/7
MPN: RS3405W/7
Ko-ken RS3410M/12 3/8 Sq. Dr. Socket set 8-19mm Surface 300mm 12 pieces
SKU: KK-RS3410M/12
MPN: RS3410M/12
Ko-ken RS3425/4-2B 3/8 Sq. Dr. Socket set TORX E10-E20 Nut Grip 150mm 4 pieces
SKU: KK-RS3425/4-2B
MPN: RS3425/4-2B
Ko-ken RS3425/9 3/8 Sq. Dr. Socket set TORX E4-E16 200mm 9 pieces
SKU: KK-RS3425/9
MPN: RS3425/9
Ko-ken RS3430M/6 3/8 Sq. Dr. Universal Bit Socket set 5mm-12mm Hex 150mm 6 pieces
SKU: KK-RS3430M/6
MPN: RS3430M/6
Ko-ken RS3440A/8 3/8 Sq. Dr. Universal Socket set 5/16-3/4 6 point 200mm 8 pieces
SKU: KK-RS3440A/8
MPN: RS3440A/8
Ko-ken RS3440M/8 3/8 Sq. Dr. Universal Socket set 8mm-19mm 6 point 200mm 8 pieces
SKU: KK-RS3440M/8
MPN: RS3440M/8