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KK Hand Tools

Ko-Ken hand tools include professional-grade tools and accessories used for assembly, maintenance, and repair in automotive, industrial, and MRO environments (application dependent). Technicians and maintenance teams typically choose these tools for consistent fit on fasteners, durability under daily use, and better access in tight spaces. Because “hand tools” covers many categories, selecting the right item is mainly about matching the tool type and specifications to your fastener sizes, drive system, and working conditions (per listing).


Explore our full range of Ko-Ken hand tools, including:
Standard and deep sockets (metric and SAE)
Ratchets and breaker bars for high-torque applications
Extension bars for hard-to-reach fasteners
Specialty tools and adaptors for unique jobs

Ko-ken 3117M.125-10 3/8 Sq. Dr. Extension Socket 10mm 6 point Length 125mm

Ko-ken 3117M.125-10 3/8 Sq. Dr. Extension Socket 10mm 6 point Length 125mm

SKU: KK-3117M.125-10
MPN: 3117M.125-10

Save $7.12
Ko-ken 3117M.125-12 3/8 Sq. Dr. Extension Socket 12mm 6 point Length 125mm

Ko-ken 3117M.125-12 3/8 Sq. Dr. Extension Socket 12mm 6 point Length 125mm

SKU: KK-3117M.125-12
MPN: 3117M.125-12

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Ko-ken 3117M.125-13 3/8 Sq. Dr. Extension Socket 13mm 6 point Length 125mm

Ko-ken 3117M.125-13 3/8 Sq. Dr. Extension Socket 13mm 6 point Length 125mm

SKU: KK-3117M.125-13
MPN: 3117M.125-13

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Ko-ken 3117M.125-14 3/8 Sq. Dr. Extension Socket 14mm 6 point Length 125mm

Ko-ken 3117M.125-14 3/8 Sq. Dr. Extension Socket 14mm 6 point Length 125mm

SKU: KK-3117M.125-14
MPN: 3117M.125-14

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Ko-ken 3117M.125-17 3/8 Sq. Dr. Extension Socket 17mm 6 point Length 125mm

Ko-ken 3117M.125-17 3/8 Sq. Dr. Extension Socket 17mm 6 point Length 125mm

SKU: KK-3117M.125-17
MPN: 3117M.125-17

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Ko-ken 3117M.125-19 3/8 Sq. Dr. Extension Socket 19mm 6 point Length 125mm

Ko-ken 3117M.125-19 3/8 Sq. Dr. Extension Socket 19mm 6 point Length 125mm

SKU: KK-3117M.125-19
MPN: 3117M.125-19

Save $7.35
Ko-ken 3117M.250-10 3/8 Sq. Dr. Extension Socket 10mm 6 point Length 250mm

Ko-ken 3117M.250-10 3/8 Sq. Dr. Extension Socket 10mm 6 point Length 250mm

SKU: KK-3117M.250-10
MPN: 3117M.250-10

Save $7.82
Ko-ken 3117M.250-12 3/8 Sq. Dr. Extension Socket 12mm 6 point Length 250mm

Ko-ken 3117M.250-12 3/8 Sq. Dr. Extension Socket 12mm 6 point Length 250mm

SKU: KK-3117M.250-12
MPN: 3117M.250-12

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Ko-ken 3117M.250-13 3/8 Sq. Dr. Extension Socket 13mm 6 point Length 250mm

Ko-ken 3117M.250-13 3/8 Sq. Dr. Extension Socket 13mm 6 point Length 250mm

SKU: KK-3117M.250-13
MPN: 3117M.250-13

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Ko-ken 3117M.250-14 3/8 Sq. Dr. Extension Socket 14mm 6 point Length 250mm

Ko-ken 3117M.250-14 3/8 Sq. Dr. Extension Socket 14mm 6 point Length 250mm

SKU: KK-3117M.250-14
MPN: 3117M.250-14

Save $7.82
Ko-ken 3117M.250-17 3/8 Sq. Dr. Extension Socket 17mm 6 point Length 250mm

Ko-ken 3117M.250-17 3/8 Sq. Dr. Extension Socket 17mm 6 point Length 250mm

SKU: KK-3117M.250-17
MPN: 3117M.250-17

Save $7.82
Ko-ken 3117M.250-19 3/8 Sq. Dr. Extension Socket 19mm 6 point Length 250mm

Ko-ken 3117M.250-19 3/8 Sq. Dr. Extension Socket 19mm 6 point Length 250mm

SKU: KK-3117M.250-19
MPN: 3117M.250-19

Save $7.97
Ko-ken 4117M.125-13 1/2 Sq. Dr. Extension Socket 13mm 6 point Length 125mm

Ko-ken 4117M.125-13 1/2 Sq. Dr. Extension Socket 13mm 6 point Length 125mm

SKU: KK-4117M.125-13
MPN: 4117M.125-13

Save $8.24
Ko-ken 4117M.125-14 1/2 Sq. Dr. Extension Socket 14mm 6 point Length 125mm

Ko-ken 4117M.125-14 1/2 Sq. Dr. Extension Socket 14mm 6 point Length 125mm

SKU: KK-4117M.125-14
MPN: 4117M.125-14

Save $8.24
Ko-ken 4117M.125-17 1/2 Sq. Dr. Extension Socket 17mm 6 point Length 125mm

Ko-ken 4117M.125-17 1/2 Sq. Dr. Extension Socket 17mm 6 point Length 125mm

SKU: KK-4117M.125-17
MPN: 4117M.125-17

Save $8.24
Ko-ken 4117M.125-19 1/2 Sq. Dr. Extension Socket 19mm 6 point Length 125mm

Ko-ken 4117M.125-19 1/2 Sq. Dr. Extension Socket 19mm 6 point Length 125mm

SKU: KK-4117M.125-19
MPN: 4117M.125-19

Save $9.09
Ko-ken 4117M.250-13 1/2 Sq. Dr. Extension Socket 13mm 6 point Length 250mm

Ko-ken 4117M.250-13 1/2 Sq. Dr. Extension Socket 13mm 6 point Length 250mm

SKU: KK-4117M.250-13
MPN: 4117M.250-13

Save $9.12
Ko-ken 4117M.250-14 1/2 Sq. Dr. Extension Socket 14mm 6 point Length 250mm

Ko-ken 4117M.250-14 1/2 Sq. Dr. Extension Socket 14mm 6 point Length 250mm

SKU: KK-4117M.250-14
MPN: 4117M.250-14

Save $9.12
Ko-ken 4117M.250-17 1/2 Sq. Dr. Extension Socket 17mm 6 point Length 250mm

Ko-ken 4117M.250-17 1/2 Sq. Dr. Extension Socket 17mm 6 point Length 250mm

SKU: KK-4117M.250-17
MPN: 4117M.250-17

Save $9.12
Ko-ken 4117M.250-19 1/2 Sq. Dr. Extension Socket 19mm 6 point Length 250mm

Ko-ken 4117M.250-19 1/2 Sq. Dr. Extension Socket 19mm 6 point Length 250mm

SKU: KK-4117M.250-19
MPN: 4117M.250-19

Save $9.95