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 2010MZ.50-5 1/4 Sq. Dr. Bit Socket 5mm 6 point Length 50mm Z-series
SKU: KK-2010MZ.50-5
MPN: 2010MZ.50-5
Ko-ken 2010MZ.50-6 1/4 Sq. Dr. Bit Socket 6mm 6 point Length 50mm Z-series
SKU: KK-2010MZ.50-6
MPN: 2010MZ.50-6
Ko-ken 2011M.50-3 1/4 Sq. Dr. Bit Socket 3mm Ballpoint Hex Length 50mm
SKU: KK-2011M.50-3
MPN: 2011M.50-3
Ko-ken 2011M.50-4 1/4 Sq. Dr. Bit Socket 4mm Ballpoint Hex Length 50mm
SKU: KK-2011M.50-4
MPN: 2011M.50-4
Ko-ken 2011M.50-5 1/4 Sq. Dr. Bit Socket 5mm Ballpoint Hex Length 50mm
SKU: KK-2011M.50-5
MPN: 2011M.50-5
Ko-ken 2011M.50-6 1/4 Sq. Dr. Bit Socket 6mm Ballpoint Hex Length 50mm
SKU: KK-2011M.50-6
MPN: 2011M.50-6
Ko-ken 2020.28-M4 1/4 Sq. Dr. Bit Socket XZN M4 Length 28mm
SKU: KK-2020.28-M4
MPN: 2020.28-M4
Ko-ken 2020.28-M5 1/4 Sq. Dr. Bit Socket XZN M5 Length 28mm
SKU: KK-2020.28-M5
MPN: 2020.28-M5
Ko-ken 2020.28-M6 1/4 Sq. Dr. Bit Socket XZN M6 Length 28mm
SKU: KK-2020.28-M6
MPN: 2020.28-M6
Ko-ken 2020.28-M8 1/4 Sq. Dr. Bit Socket XZN M8 Length 28mm
SKU: KK-2020.28-M8
MPN: 2020.28-M8
Ko-ken 2020.50-M4 1/4 Sq. Dr. Bit Socket XZN M4 Length 50mm
SKU: KK-2020.50-M4
MPN: 2020.50-M4
Ko-ken 2020.50-M5 1/4 Sq. Dr. Bit Socket XZN M5 Length 50mm
SKU: KK-2020.50-M5
MPN: 2020.50-M5
Ko-ken 2020.50-M6 1/4 Sq. Dr. Bit Socket XZN M6 Length 50mm
SKU: KK-2020.50-M6
MPN: 2020.50-M6
Ko-ken 2020.50-M8 1/4 Sq. Dr. Bit Socket XZN M8 Length 50mm
SKU: KK-2020.50-M8
MPN: 2020.50-M8
Ko-ken 2025.28-10IP 1/4 Sq. Dr. Bit Socket TORXPLUS 10IP Length 28mm
SKU: KK-2025.28-10IP
MPN: 2025.28-10IP
Ko-ken 2025.28-10IPR 1/4 Sq. Dr. Bit Socket TORXPLUS 10IPR Tamper Resistant Length 28mm
SKU: KK-2025.28-10IPR
MPN: 2025.28-10IPR
Ko-ken 2025.28-15IP 1/4 Sq. Dr. Bit Socket TORXPLUS 15IP Length 28mm
SKU: KK-2025.28-15IP
MPN: 2025.28-15IP
Ko-ken 2025.28-15IPR 1/4 Sq. Dr. Bit Socket TORXPLUS 15IPR Tamper Resistant Length 28mm
SKU: KK-2025.28-15IPR
MPN: 2025.28-15IPR
Ko-ken 2025.28-20IP 1/4 Sq. Dr. Bit Socket TORXPLUS 20IP Length 28mm
SKU: KK-2025.28-20IP
MPN: 2025.28-20IP
Ko-ken 2025.28-20IPR 1/4 Sq. Dr. Bit Socket TORXPLUS 20IPR Tamper Resistant Length 28mm
SKU: KK-2025.28-20IPR
MPN: 2025.28-20IPR
Ko-ken 2025.28-25IP 1/4 Sq. Dr. Bit Socket TORXPLUS 25IP Length 28mm
SKU: KK-2025.28-25IP
MPN: 2025.28-25IP
Ko-ken 2025.28-25IPR 1/4 Sq. Dr. Bit Socket TORXPLUS 25IPR Tamper Resistant Length 28mm
SKU: KK-2025.28-25IPR
MPN: 2025.28-25IPR
Ko-ken 2025.28-27IP 1/4 Sq. Dr. Bit Socket TORXPLUS 27IP Length 28mm
SKU: KK-2025.28-27IP
MPN: 2025.28-27IP
Ko-ken 2025.28-27IPR 1/4 Sq. Dr. Bit Socket TORXPLUS 27IPR Tamper Resistant Length 28mm
SKU: KK-2025.28-27IPR
MPN: 2025.28-27IPR