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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 RS2400MZ/12 1/4 Sq. Dr. Socket set 4-14mm 6 point Z-series 12 pieces

Ko-ken RS2400MZ/12 1/4 Sq. Dr. Socket set 4-14mm 6 point Z-series 12 pieces

SKU: KK-RS2400MZ/12
MPN: RS2400MZ/12

Save $26.02
Ko-ken RS2400W/9-BA 1/4 Sq. Dr. Socket set 8BA-0BA 6 point 9 pieces

Ko-ken RS2400W/9-BA 1/4 Sq. Dr. Socket set 8BA-0BA 6 point 9 pieces

SKU: KK-RS2400W/9-BA
MPN: RS2400W/9-BA

Save $11.64
Ko-ken RS2405A/9 1/4 Sq. Dr. Socket set 3/16-1/2 12 point 150mm 9 pieces

Ko-ken RS2405A/9 1/4 Sq. Dr. Socket set 3/16-1/2 12 point 150mm 9 pieces

SKU: KK-RS2405A/9
MPN: RS2405A/9

Save $10.12
Ko-ken RS2405M/12 1/4 Sq. Dr. Socket set 4-14mm 12 point 200mm 12 pieces

Ko-ken RS2405M/12 1/4 Sq. Dr. Socket set 4-14mm 12 point 200mm 12 pieces

SKU: KK-RS2405M/12
MPN: RS2405M/12

Save $12.58
Ko-ken RS2410M/12 1/4 Sq. Dr. Socket set 4-14mm Surface 200mm 12 pieces

Ko-ken RS2410M/12 1/4 Sq. Dr. Socket set 4-14mm Surface 200mm 12 pieces

SKU: KK-RS2410M/12
MPN: RS2410M/12

Save $13.22
Ko-ken RS2425/6 1/4 Sq. Dr. Socket set TORX E4-E10 150mm 6 pieces

Ko-ken RS2425/6 1/4 Sq. Dr. Socket set TORX E4-E10 150mm 6 pieces

SKU: KK-RS2425/6
MPN: RS2425/6

Save $7.05
Ko-ken RS2445A/9 1/4 Sq. Dr. Universal Socket set 3/16-9/16 12 point 150mm 9 pieces

Ko-ken RS2445A/9 1/4 Sq. Dr. Universal Socket set 3/16-9/16 12 point 150mm 9 pieces

SKU: KK-RS2445A/9
MPN: RS2445A/9

Save $58.85
Ko-ken RS2450MS/6 1/4 Sq. Dr. Socket set 7-14mm Nut Grip 150mm 6 pieces

Ko-ken RS2450MS/6 1/4 Sq. Dr. Socket set 7-14mm Nut Grip 150mm 6 pieces

SKU: KK-RS2450MS/6
MPN: RS2450MS/6

Save $15.63
Ko-ken RS3010A/8-L50 3/8 Sq. Dr. Bit Socket set 1/8-1/2 Hex 200mm 8 pieces

Ko-ken RS3010A/8-L50 3/8 Sq. Dr. Bit Socket set 1/8-1/2 Hex 200mm 8 pieces

SKU: KK-RS3010A/8-L50
MPN: RS3010A/8-L50

Save $20.98
Ko-ken RS3010M/8-L100 3/8 Sq. Dr. Bit Socket set 3mm-12mm Hex 200mm 8 pieces

Ko-ken RS3010M/8-L100 3/8 Sq. Dr. Bit Socket set 3mm-12mm Hex 200mm 8 pieces

SKU: KK-RS3010M/8-L100
MPN: RS3010M/8-L100

Save $20.14
Ko-ken RS3010M/8-L38 3/8 Sq. Dr. Bit Socket set 3mm-12mm Hex 200mm 8 pieces

Ko-ken RS3010M/8-L38 3/8 Sq. Dr. Bit Socket set 3mm-12mm Hex 200mm 8 pieces

SKU: KK-RS3010M/8-L38
MPN: RS3010M/8-L38

Save $16.58
Ko-ken RS3010M/8-L62 3/8 Sq. Dr. Bit Socket set 3mm-12mm Hex 200mm 8 pieces

Ko-ken RS3010M/8-L62 3/8 Sq. Dr. Bit Socket set 3mm-12mm Hex 200mm 8 pieces

SKU: KK-RS3010M/8-L62
MPN: RS3010M/8-L62

Save $18.46
Ko-ken RS3010MZ/8-L50 3/8 Sq. Dr. Bit Socket set 3-12mm Hex 200mm Z-series 8 pieces

Ko-ken RS3010MZ/8-L50 3/8 Sq. Dr. Bit Socket set 3-12mm Hex 200mm Z-series 8 pieces

SKU: KK-RS3010MZ/8-L50
MPN: RS3010MZ/8-L50

Save $28.53
Ko-ken RS3010MZ/8-L75 3/8 Sq. Dr. Bit Socket set 3-12mm Hex 200mm Z-series 8 pieces

Ko-ken RS3010MZ/8-L75 3/8 Sq. Dr. Bit Socket set 3-12mm Hex 200mm Z-series 8 pieces

SKU: KK-RS3010MZ/8-L75
MPN: RS3010MZ/8-L75

Save $32.21
Ko-ken RS3012A/8-L52 3/8 Sq. Dr. Bit Socket set 1/8-1/2 Hex 200mm 8 pieces

Ko-ken RS3012A/8-L52 3/8 Sq. Dr. Bit Socket set 1/8-1/2 Hex 200mm 8 pieces

SKU: KK-RS3012A/8-L52
MPN: RS3012A/8-L52

Save $22.13
Ko-ken RS3012M/8-L52 3/8 Sq. Dr. Bit Socket set 3mm-12mm Hex 200mm 8 pieces

Ko-ken RS3012M/8-L52 3/8 Sq. Dr. Bit Socket set 3mm-12mm Hex 200mm 8 pieces

SKU: KK-RS3012M/8-L52
MPN: RS3012M/8-L52

Save $20.14
Ko-ken RS3015M/8-L100 3/8 Sq. Dr. Bit Socket set 3mm-12mm Hex 200mm 8 pieces

Ko-ken RS3015M/8-L100 3/8 Sq. Dr. Bit Socket set 3mm-12mm Hex 200mm 8 pieces

SKU: KK-RS3015M/8-L100
MPN: RS3015M/8-L100

Save $26.02
Ko-ken RS3015M/8-L62 3/8 Sq. Dr. Bit Socket set 3mm-12mm Hex 200mm 8 pieces

Ko-ken RS3015M/8-L62 3/8 Sq. Dr. Bit Socket set 3mm-12mm Hex 200mm 8 pieces

SKU: KK-RS3015M/8-L62
MPN: RS3015M/8-L62

Save $24.13
Ko-ken RS3020/6-L38 3/8 Sq. Dr. Bit Socket set XZN M5-M14 Triple Square 150mm 6 pieces

Ko-ken RS3020/6-L38 3/8 Sq. Dr. Bit Socket set XZN M5-M14 Triple Square 150mm 6 pieces

SKU: KK-RS3020/6-L38
MPN: RS3020/6-L38

Save $18.88
Ko-ken RS3020/7-L50 3/8 Sq. Dr. Bit Socket set XZN M4-M14 Triple Square 200mm 7 pieces

Ko-ken RS3020/7-L50 3/8 Sq. Dr. Bit Socket set XZN M4-M14 Triple Square 200mm 7 pieces

SKU: KK-RS3020/7-L50
MPN: RS3020/7-L50

Save $21.82
Ko-ken RS3025/8-IP 3/8 Sq. Dr. Bit Socket set TORXPLUS 20IP-55IP 200mm 8 pieces

Ko-ken RS3025/8-IP 3/8 Sq. Dr. Bit Socket set TORXPLUS 20IP-55IP 200mm 8 pieces

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

Save $27.07
Ko-ken RS3025/8-L100R 3/8 Sq. Dr. Bit Socket set TORX T20-T55 Round shank 200mm 8 pieces

Ko-ken RS3025/8-L100R 3/8 Sq. Dr. Bit Socket set TORX T20-T55 Round shank 200mm 8 pieces

SKU: KK-RS3025/8-L100R
MPN: RS3025/8-L100R

Save $28.01
Ko-ken RS3025/8-L100RH 3/8 Sq. Dr. Bit Socket set TORX T20H-T55H Tamper Resistant 200mm Round shank 8 pieces

Ko-ken RS3025/8-L100RH 3/8 Sq. Dr. Bit Socket set TORX T20H-T55H Tamper Resistant 200mm Round shank 8 pieces

SKU: KK-RS3025/8-L100RH
MPN: RS3025/8-L100RH

Save $30.42
Ko-ken RS3025/8-L38 3/8 Sq. Dr. Bit Socket set TORX T10-T45 200mm 8 pieces

Ko-ken RS3025/8-L38 3/8 Sq. Dr. Bit Socket set TORX T10-T45 200mm 8 pieces

SKU: KK-RS3025/8-L38
MPN: RS3025/8-L38

Save $21.72