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Ko-Ken

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.


Ko-ken United states distributors

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 RS3025/8-L50 3/8 Sq. Dr. Bit Socket set TORX T10-T45 200mm 8 pieces

Ko-ken RS3025/8-L50 3/8 Sq. Dr. Bit Socket set TORX T10-T45 200mm 8 pieces

SKU: KK-RS3025/8-L50
MPN: RS3025/8-L50

Save $21.61
Ko-ken RS3025/9-HOLE 3/8 Sq. Dr. Bit Socket set TORX T10H-T50H Tamper Resistant 200mm 9 pieces

Ko-ken RS3025/9-HOLE 3/8 Sq. Dr. Bit Socket set TORX T10H-T50H Tamper Resistant 200mm 9 pieces

SKU: KK-RS3025/9-HOLE
MPN: RS3025/9-HOLE

Save $27.07
Ko-ken RS3025/9-IPR 3/8 Sq. Dr. Bit Socket set TORXPLUS 10IPR-50IPR Tamper Resistant 200mm 9 pieces

Ko-ken RS3025/9-IPR 3/8 Sq. Dr. Bit Socket set TORXPLUS 10IPR-50IPR Tamper Resistant 200mm 9 pieces

SKU: KK-RS3025/9-IPR
MPN: RS3025/9-IPR

Save $32
Ko-ken RS3025Z/8-L50 3/8 Sq. Dr. Bit Socket set TORX T20-T55 200mm Z-series 8 pieces

Ko-ken RS3025Z/8-L50 3/8 Sq. Dr. Bit Socket set TORX T20-T55 200mm Z-series 8 pieces

SKU: KK-RS3025Z/8-L50
MPN: RS3025Z/8-L50

Save $32.41
Ko-ken RS3025Z/8-L75 3/8 Sq. Dr. Bit Socket set TORX T20-T55 200mm Z-series 8 pieces

Ko-ken RS3025Z/8-L75 3/8 Sq. Dr. Bit Socket set TORX T20-T55 200mm Z-series 8 pieces

SKU: KK-RS3025Z/8-L75
MPN: RS3025Z/8-L75

Save $38.61
Ko-ken RS3027/5-L50 3/8 Sq. Dr. Bit Socket set Ribe-CV M5-M12 150mm 5 pieces

Ko-ken RS3027/5-L50 3/8 Sq. Dr. Bit Socket set Ribe-CV M5-M12 150mm 5 pieces

SKU: KK-RS3027/5-L50
MPN: RS3027/5-L50

Save $18.67
Ko-ken RS3127/8 3/8 Sq. Dr. Nut Twister set 8mm-16mm 200mm 8 pieces

Ko-ken RS3127/8 3/8 Sq. Dr. Nut Twister set 8mm-16mm 200mm 8 pieces

SKU: KK-RS3127/8
MPN: RS3127/8

Save $59.80
Ko-ken RS3129/6-L32 3/8 Sq. Dr. Bolt Twister set 2mm-10mm 150mm 6 pieces

Ko-ken RS3129/6-L32 3/8 Sq. Dr. Bolt Twister set 2mm-10mm 150mm 6 pieces

SKU: KK-RS3129/6-L32
MPN: RS3129/6-L32

Save $16.89
Ko-ken RS3129/6-L60 3/8 Sq. Dr. Bolt Twister set 2mm-10mm 150mm 6 pieces

Ko-ken RS3129/6-L60 3/8 Sq. Dr. Bolt Twister set 2mm-10mm 150mm 6 pieces

SKU: KK-RS3129/6-L60
MPN: RS3129/6-L60

Save $18.25
Ko-ken RS3300A/9 3/8 Sq. Dr. Socket set 1/4-3/4 6 point 200mm 9 pieces

Ko-ken RS3300A/9 3/8 Sq. Dr. Socket set 1/4-3/4 6 point 200mm 9 pieces

SKU: KK-RS3300A/9
MPN: RS3300A/9

Save $24.55
Ko-ken RS3300FN/6 3/8 Sq. Dr. Socket set 8mm-19mm Flare Nut 150mm 6 pieces

Ko-ken RS3300FN/6 3/8 Sq. Dr. Socket set 8mm-19mm Flare Nut 150mm 6 pieces

SKU: KK-RS3300FN/6
MPN: RS3300FN/6

Save $69.03
Ko-ken RS3300M/12 3/8 Sq. Dr. Socket set 8mm-19mm 6 point 300mm 12 pieces

Ko-ken RS3300M/12 3/8 Sq. Dr. Socket set 8mm-19mm 6 point 300mm 12 pieces

SKU: KK-RS3300M/12
MPN: RS3300M/12

Save $29.58
Ko-ken RS3300M/8 3/8 Sq. Dr. Socket set 8mm-19mm 6 point 200mm 8 pieces

Ko-ken RS3300M/8 3/8 Sq. Dr. Socket set 8mm-19mm 6 point 200mm 8 pieces

SKU: KK-RS3300M/8
MPN: RS3300M/8

Save $19.41
Ko-ken RS3300MZ/12 3/8 Sq. Dr. Socket set 7-19mm 6 point 300mm Z-series 12 pieces

Ko-ken RS3300MZ/12 3/8 Sq. Dr. Socket set 7-19mm 6 point 300mm Z-series 12 pieces

SKU: KK-RS3300MZ/12
MPN: RS3300MZ/12

Save $42.80
Ko-ken RS3300MZ/8 3/8 Sq. Dr. Socket set 8-19mm 6 point 200mm Z-series 8 pieces

Ko-ken RS3300MZ/8 3/8 Sq. Dr. Socket set 8-19mm 6 point 200mm Z-series 8 pieces

SKU: KK-RS3300MZ/8
MPN: RS3300MZ/8

Save $29.37
Ko-ken RS3300W/7 3/8 Sq. Dr. Socket set Whitworth 1/8-1/2 6 point 200mm 7 pieces

Ko-ken RS3300W/7 3/8 Sq. Dr. Socket set Whitworth 1/8-1/2 6 point 200mm 7 pieces

SKU: KK-RS3300W/7
MPN: RS3300W/7

Save $25.91
Ko-ken RS3300X/8 3/8 Sq. Dr. Socket set 8mm-19mm 6 point 200mm 8 pieces

Ko-ken RS3300X/8 3/8 Sq. Dr. Socket set 8mm-19mm 6 point 200mm 8 pieces

SKU: KK-RS3300X/8
MPN: RS3300X/8

Save $18.99
Ko-ken RS3300XA/9 3/8 Sq. Dr. Socket set 1/4-3/4 6 point 200mm 9 pieces

Ko-ken RS3300XA/9 3/8 Sq. Dr. Socket set 1/4-3/4 6 point 200mm 9 pieces

SKU: KK-RS3300XA/9
MPN: RS3300XA/9

Save $23.71
Ko-ken RS3300XZ/12 3/8 Sq. Dr. Socket set 7-19mm 6 point 300mm Z-series 12 pieces

Ko-ken RS3300XZ/12 3/8 Sq. Dr. Socket set 7-19mm 6 point 300mm Z-series 12 pieces

SKU: KK-RS3300XZ/12
MPN: RS3300XZ/12

Save $42.07
Ko-ken RS3300XZ/8 3/8 Sq. Dr. Socket set 8-19mm 6 point 200mm Z-series 8 pieces

Ko-ken RS3300XZ/8 3/8 Sq. Dr. Socket set 8-19mm 6 point 200mm Z-series 8 pieces

SKU: KK-RS3300XZ/8
MPN: RS3300XZ/8

Save $29.06
Ko-ken RS3305A/9 3/8 Sq. Dr. Socket set 1/4-3/4 12 point 200mm 9 pieces

Ko-ken RS3305A/9 3/8 Sq. Dr. Socket set 1/4-3/4 12 point 200mm 9 pieces

SKU: KK-RS3305A/9
MPN: RS3305A/9

Save $24.55
Ko-ken RS3305M/12 3/8 Sq. Dr. Socket set 8mm-19mm 12 point 300mm 12 pieces

Ko-ken RS3305M/12 3/8 Sq. Dr. Socket set 8mm-19mm 12 point 300mm 12 pieces

SKU: KK-RS3305M/12
MPN: RS3305M/12

Save $29.58
Ko-ken RS3305M/8 3/8 Sq. Dr. Socket set 8mm-19mm 12 point 200mm 8 pieces

Ko-ken RS3305M/8 3/8 Sq. Dr. Socket set 8mm-19mm 12 point 200mm 8 pieces

SKU: KK-RS3305M/8
MPN: RS3305M/8

Save $19.41
Ko-ken RS3305W/7 3/8 Sq. Dr. Socket set Whitworth 1/8-1/2 12 point 200mm 7 pieces

Ko-ken RS3305W/7 3/8 Sq. Dr. Socket set Whitworth 1/8-1/2 12 point 200mm 7 pieces

SKU: KK-RS3305W/7
MPN: RS3305W/7

Save $25.91