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 8400A-1.13/16 1 Sq. Dr. Socket  1.13/16 6 point Length 72mm

Ko-ken 8400A-1.13/16 1 Sq. Dr. Socket 1.13/16 6 point Length 72mm

SKU: KK-8400A-1.13/16
MPN: 8400A-1.13/16

Sale price $63.38 List price $79.22
Save $15.84
Ko-ken 8400A-1.15/16 1 Sq. Dr. Socket  1.15/16 6 point Length 72mm

Ko-ken 8400A-1.15/16 1 Sq. Dr. Socket 1.15/16 6 point Length 72mm

SKU: KK-8400A-1.15/16
MPN: 8400A-1.15/16

Sale price $70.52 List price $88.15
Save $17.63
Ko-ken 8400A-1.3/16 1 Sq. Dr. Socket  1.3/16 6 point Length 65mm

Ko-ken 8400A-1.3/16 1 Sq. Dr. Socket 1.3/16 6 point Length 65mm

SKU: KK-8400A-1.3/16
MPN: 8400A-1.3/16

Sale price $44.08 List price $55.09
Save $11.01
Ko-ken 8400A-1.3/4 1 Sq. Dr. Socket  1.3/4 6 point Length 68mm

Ko-ken 8400A-1.3/4 1 Sq. Dr. Socket 1.3/4 6 point Length 68mm

SKU: KK-8400A-1.3/4
MPN: 8400A-1.3/4

Sale price $63.38 List price $79.22
Save $15.84
Ko-ken 8400A-1.3/8 1 Sq. Dr. Socket  1.3/8 6 point Length 65mm

Ko-ken 8400A-1.3/8 1 Sq. Dr. Socket 1.3/8 6 point Length 65mm

SKU: KK-8400A-1.3/8
MPN: 8400A-1.3/8

Sale price $44.08 List price $55.09
Save $11.01
Ko-ken 8400A-1.5/16 1 Sq. Dr. Socket  1.5/16 6 point Length 65mm

Ko-ken 8400A-1.5/16 1 Sq. Dr. Socket 1.5/16 6 point Length 65mm

SKU: KK-8400A-1.5/16
MPN: 8400A-1.5/16

Sale price $44.08 List price $55.09
Save $11.01
Ko-ken 8400A-1.5/8 1 Sq. Dr. Socket  1.5/8 6 point Length 68mm

Ko-ken 8400A-1.5/8 1 Sq. Dr. Socket 1.5/8 6 point Length 68mm

SKU: KK-8400A-1.5/8
MPN: 8400A-1.5/8

Sale price $52.05 List price $65.06
Save $13.01
Ko-ken 8400A-1.7/16 1 Sq. Dr. Socket  1.7/16 6 point Length 65mm

Ko-ken 8400A-1.7/16 1 Sq. Dr. Socket 1.7/16 6 point Length 65mm

SKU: KK-8400A-1.7/16
MPN: 8400A-1.7/16

Sale price $44.08 List price $55.09
Save $11.01
Ko-ken 8400A-1.7/8 1 Sq. Dr. Socket  1.7/8 6 point Length 72mm

Ko-ken 8400A-1.7/8 1 Sq. Dr. Socket 1.7/8 6 point Length 72mm

SKU: KK-8400A-1.7/8
MPN: 8400A-1.7/8

Sale price $70.52 List price $88.15
Save $17.63
Ko-ken 8400A-1.9/16 1 Sq. Dr. Socket  1.9/16 6 point Length 65mm

Ko-ken 8400A-1.9/16 1 Sq. Dr. Socket 1.9/16 6 point Length 65mm

SKU: KK-8400A-1.9/16
MPN: 8400A-1.9/16

Sale price $48.27 List price $60.33
Save $12.06
Ko-ken 8400A-15/16 1 Sq. Dr. Socket  15/16 6 point Length 60mm

Ko-ken 8400A-15/16 1 Sq. Dr. Socket 15/16 6 point Length 60mm

SKU: KK-8400A-15/16
MPN: 8400A-15/16

Sale price $44.08 List price $55.09
Save $11.01
Ko-ken 8400A-2 1 Sq. Dr. Socket  2 6 point Length 72mm

Ko-ken 8400A-2 1 Sq. Dr. Socket 2 6 point Length 72mm

SKU: KK-8400A-2
MPN: 8400A-2

Sale price $70.93 List price $88.66
Save $17.73
Ko-ken 8400A-2.1/16 1 Sq. Dr. Socket  2.1/16 6 point Length 72mm

Ko-ken 8400A-2.1/16 1 Sq. Dr. Socket 2.1/16 6 point Length 72mm

SKU: KK-8400A-2.1/16
MPN: 8400A-2.1/16

Sale price $70.93 List price $88.66
Save $17.73
Ko-ken 8400A-2.1/2 1 Sq. Dr. Socket  2.1/2 6 point Length 82mm

Ko-ken 8400A-2.1/2 1 Sq. Dr. Socket 2.1/2 6 point Length 82mm

SKU: KK-8400A-2.1/2
MPN: 8400A-2.1/2

Sale price $128.84 List price $161.05
Save $32.21
Ko-ken 8400A-2.1/4 1 Sq. Dr. Socket  2.1/4 6 point Length 77mm

Ko-ken 8400A-2.1/4 1 Sq. Dr. Socket 2.1/4 6 point Length 77mm

SKU: KK-8400A-2.1/4
MPN: 8400A-2.1/4

Sale price $96.55 List price $120.68
Save $24.13
Ko-ken 8400A-2.1/8 1 Sq. Dr. Socket  2.1/8 6 point Length 72mm

Ko-ken 8400A-2.1/8 1 Sq. Dr. Socket 2.1/8 6 point Length 72mm

SKU: KK-8400A-2.1/8
MPN: 8400A-2.1/8

Sale price $82.68 List price $103.35
Save $20.67
Ko-ken 8400A-2.11/16 1 Sq. Dr. Socket  2.11/16 6 point Length 86mm

Ko-ken 8400A-2.11/16 1 Sq. Dr. Socket 2.11/16 6 point Length 86mm

SKU: KK-8400A-2.11/16
MPN: 8400A-2.11/16

Sale price $140.60 List price $175.74
Save $35.14
Ko-ken 8400A-2.13/16 1 Sq. Dr. Socket  2.13/16 6 point Length 88mm

Ko-ken 8400A-2.13/16 1 Sq. Dr. Socket 2.13/16 6 point Length 88mm

SKU: KK-8400A-2.13/16
MPN: 8400A-2.13/16

Sale price $177.53 List price $221.91
Save $44.38
Ko-ken 8400A-2.15/16 1 Sq. Dr. Socket  2.15/16 6 point Length 90mm

Ko-ken 8400A-2.15/16 1 Sq. Dr. Socket 2.15/16 6 point Length 90mm

SKU: KK-8400A-2.15/16
MPN: 8400A-2.15/16

Sale price $182.56 List price $228.20
Save $45.64
Ko-ken 8400A-2.3/16 1 Sq. Dr. Socket  2.3/16 6 point Length 77mm

Ko-ken 8400A-2.3/16 1 Sq. Dr. Socket 2.3/16 6 point Length 77mm

SKU: KK-8400A-2.3/16
MPN: 8400A-2.3/16

Sale price $90.24 List price $112.79
Save $22.55
Ko-ken 8400A-2.3/4 1 Sq. Dr. Socket  2.3/4 6 point Length 88mm

Ko-ken 8400A-2.3/4 1 Sq. Dr. Socket 2.3/4 6 point Length 88mm

SKU: KK-8400A-2.3/4
MPN: 8400A-2.3/4

Sale price $151.51 List price $189.38
Save $37.87
Ko-ken 8400A-2.3/8 1 Sq. Dr. Socket  2.3/8 6 point Length 82mm

Ko-ken 8400A-2.3/8 1 Sq. Dr. Socket 2.3/8 6 point Length 82mm

SKU: KK-8400A-2.3/8
MPN: 8400A-2.3/8

Sale price $104.10 List price $130.12
Save $26.02
Ko-ken 8400A-2.5/16 1 Sq. Dr. Socket  2.5/16 6 point Length 77mm

Ko-ken 8400A-2.5/16 1 Sq. Dr. Socket 2.5/16 6 point Length 77mm

SKU: KK-8400A-2.5/16
MPN: 8400A-2.5/16

Sale price $96.55 List price $120.68
Save $24.13
Ko-ken 8400A-2.5/8 1 Sq. Dr. Socket  2.5/8 6 point Length 86mm

Ko-ken 8400A-2.5/8 1 Sq. Dr. Socket 2.5/8 6 point Length 86mm

SKU: KK-8400A-2.5/8
MPN: 8400A-2.5/8

Sale price $140.60 List price $175.74
Save $35.14