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 3760-500 3/8 Sq. Dr. Extension Bar Length 500mm
SKU: KK-3760-500
MPN: 3760-500
Ko-ken 3760-600 3/8 Sq. Dr. Extension Bar Length 600mm
SKU: KK-3760-600
MPN: 3760-600
Ko-ken 3760-75 3/8 Sq. Dr. Extension Bar Length 75mm
SKU: KK-3760-75
MPN: 3760-75
Ko-ken 3760-900 3/8 Sq. Dr. Extension Bar Length 900mm
SKU: KK-3760-900
MPN: 3760-900
Ko-ken 3760Z-125 3/8 Sq. Dr. Extension Bar 3/8 Square Length 125mm Z-series
SKU: KK-3760Z-125
MPN: 3760Z-125
Ko-ken 3760Z-250 3/8 Sq. Dr. Extension Bar 3/8 Square Length 250mm Z-series
SKU: KK-3760Z-250
MPN: 3760Z-250
Ko-ken 3760Z-75 3/8 Sq. Dr. Extension Bar 3/8 Square Length 75mm Z-series
SKU: KK-3760Z-75
MPN: 3760Z-75
Ko-ken 3763-125 3/8 Sq. Dr. Wobble-Fix Extension Bar Length 125mm
SKU: KK-3763-125
MPN: 3763-125
Ko-ken 3763-150 3/8 Sq. Dr. Wobble-Fix Extension Bar Length 150mm
SKU: KK-3763-150
MPN: 3763-150
Ko-ken 3763-250 3/8 Sq. Dr. Wobble-Fix Extension Bar Length 250mm
SKU: KK-3763-250
MPN: 3763-250
Ko-ken 3763-300 3/8 Sq. Dr. Wobble-Fix Extension Bar Length 300mm
SKU: KK-3763-300
MPN: 3763-300
Ko-ken 3763-32 3/8 Sq. Dr. Wobble-Fix Extension Bar Length 32mm
SKU: KK-3763-32
MPN: 3763-32
Ko-ken 3763-50 3/8 Sq. Dr. Wobble-Fix Extension Bar Length 50mm
SKU: KK-3763-50
MPN: 3763-50
Ko-ken 3763-75 3/8 Sq. Dr. Wobble-Fix Extension Bar Length 75mm
SKU: KK-3763-75
MPN: 3763-75
Ko-ken 3768J-250 3/8 Sq. Dr. Hinge Handle Length 250mm Plastic Handle
SKU: KK-3768J-250
MPN: 3768J-250
Ko-ken 3768N-175 3/8 Sq. Dr. Hinge Handle Length 175mm Metal Handle
SKU: KK-3768N-175
MPN: 3768N-175
Ko-ken 3768N-250 3/8 Sq. Dr. Hinge Handle Length 250mm Metal Handle
SKU: KK-3768N-250
MPN: 3768N-250
Ko-ken 3768N-300 3/8 Sq. Dr. Hinge Handle Length 300mm Metal Handle
SKU: KK-3768N-300
MPN: 3768N-300
Ko-ken 3768P-250 3/8 Sq. Dr. Hinge Handle Length 250mm Polished Handle
SKU: KK-3768P-250
MPN: 3768P-250
Ko-ken 3768P-380 3/8 Sq. Dr. Hinge Handle Length 380mm Polished Handle
SKU: KK-3768P-380
MPN: 3768P-380
Ko-ken 3768Z-250 3/8 Sq. Dr. Hinge Handle Length 250mm Z-series
SKU: KK-3768Z-250
MPN: 3768Z-250
Ko-ken 3768Z-400 3/8 Sq. Dr. Hinge Handle Length 400mm Z-series
SKU: KK-3768Z-400
MPN: 3768Z-400
Ko-ken 3768ZRK 3/8" Z-Series Hinge Handle Renewal Kit
SKU: KK-3768ZRK
MPN: 3768ZRK
Ko-ken 3769H 3/8 Sq. Dr. Spinner Handle Folding Length 170mm
SKU: KK-3769H
MPN: 3769H