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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 3445M-17 3/8 Sq. Dr. Universal Socket 17mm 12 point Length 54.5mm

Ko-ken 3445M-17 3/8 Sq. Dr. Universal Socket 17mm 12 point Length 54.5mm

SKU: KK-3445M-17
MPN: 3445M-17

Save $6.71
Ko-ken 3445M-18 3/8 Sq. Dr. Universal Socket 18mm 12 point Length 54.5mm

Ko-ken 3445M-18 3/8 Sq. Dr. Universal Socket 18mm 12 point Length 54.5mm

SKU: KK-3445M-18
MPN: 3445M-18

Save $6.96
Ko-ken 3445M-19 3/8 Sq. Dr. Universal Socket 19mm 12 point Length 56.5mm

Ko-ken 3445M-19 3/8 Sq. Dr. Universal Socket 19mm 12 point Length 56.5mm

SKU: KK-3445M-19
MPN: 3445M-19

Save $6.96
Ko-ken 3445M-21 3/8 Sq. Dr. Universal Socket 21mm 12 point Length 56.5mm

Ko-ken 3445M-21 3/8 Sq. Dr. Universal Socket 21mm 12 point Length 56.5mm

SKU: KK-3445M-21
MPN: 3445M-21

Save $8.05
Ko-ken 3445M-8 3/8 Sq. Dr. Universal Socket 8mm 12 point Length 47mm

Ko-ken 3445M-8 3/8 Sq. Dr. Universal Socket 8mm 12 point Length 47mm

SKU: KK-3445M-8
MPN: 3445M-8

Save $6.45
Ko-ken 3445M-9 3/8 Sq. Dr. Universal Socket 9mm 12 point Length 47.5mm

Ko-ken 3445M-9 3/8 Sq. Dr. Universal Socket 9mm 12 point Length 47.5mm

SKU: KK-3445M-9
MPN: 3445M-9

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Ko-ken 3445W-1/2 3/8 Sq. Dr. Universal Socket Whitworth 1/2 12 point Length 58.5mm

Ko-ken 3445W-1/2 3/8 Sq. Dr. Universal Socket Whitworth 1/2 12 point Length 58.5mm

SKU: KK-3445W-1/2
MPN: 3445W-1/2

Save $11.43
Ko-ken 3445W-1/4 3/8 Sq. Dr. Universal Socket Whitworth 1/4 12 point Length 51mm

Ko-ken 3445W-1/4 3/8 Sq. Dr. Universal Socket Whitworth 1/4 12 point Length 51mm

SKU: KK-3445W-1/4
MPN: 3445W-1/4

Save $8.63
Ko-ken 3445W-1/8 3/8 Sq. Dr. Universal Socket Whitworth 1/8 12 point Length 47.5mm

Ko-ken 3445W-1/8 3/8 Sq. Dr. Universal Socket Whitworth 1/8 12 point Length 47.5mm

SKU: KK-3445W-1/8
MPN: 3445W-1/8

Save $8.39
Ko-ken 3445W-3/16 3/8 Sq. Dr. Universal Socket Whitworth 3/16 12 point Length 49.5mm

Ko-ken 3445W-3/16 3/8 Sq. Dr. Universal Socket Whitworth 3/16 12 point Length 49.5mm

SKU: KK-3445W-3/16
MPN: 3445W-3/16

Save $8.39
Ko-ken 3445W-3/8 3/8 Sq. Dr. Universal Socket Whitworth 3/8 12 point Length 54.5mm

Ko-ken 3445W-3/8 3/8 Sq. Dr. Universal Socket Whitworth 3/8 12 point Length 54.5mm

SKU: KK-3445W-3/8
MPN: 3445W-3/8

Save $9.04
Ko-ken 3445W-5/16 3/8 Sq. Dr. Universal Socket Whitworth 5/16 12 point Length 53.5mm

Ko-ken 3445W-5/16 3/8 Sq. Dr. Universal Socket Whitworth 5/16 12 point Length 53.5mm

SKU: KK-3445W-5/16
MPN: 3445W-5/16

Save $8.63
Ko-ken 3445W-7/16 3/8 Sq. Dr. Universal Socket Whitworth 7/16 12 point Length 57.5mm

Ko-ken 3445W-7/16 3/8 Sq. Dr. Universal Socket Whitworth 7/16 12 point Length 57.5mm

SKU: KK-3445W-7/16
MPN: 3445W-7/16

Save $10.18
Ko-ken 4300A-1 1/2 Sq. Dr. Socket 1 6 point Length 77mm

Ko-ken 4300A-1 1/2 Sq. Dr. Socket 1 6 point Length 77mm

SKU: KK-4300A-1
MPN: 4300A-1

Save $5.57
Ko-ken 4300A-1.1/16 1/2 Sq. Dr. Socket 1.1/16 6 point Length 77mm

Ko-ken 4300A-1.1/16 1/2 Sq. Dr. Socket 1.1/16 6 point Length 77mm

SKU: KK-4300A-1.1/16
MPN: 4300A-1.1/16

Save $5.57
Ko-ken 4300A-1.1/2 1/2 Sq. Dr. Socket 1.1/2 6 point Length 77mm

Ko-ken 4300A-1.1/2 1/2 Sq. Dr. Socket 1.1/2 6 point Length 77mm

SKU: KK-4300A-1.1/2
MPN: 4300A-1.1/2

Save $13.01
Ko-ken 4300A-1.1/4 1/2 Sq. Dr. Socket 1.1/4 6 point Length 77mm

Ko-ken 4300A-1.1/4 1/2 Sq. Dr. Socket 1.1/4 6 point Length 77mm

SKU: KK-4300A-1.1/4
MPN: 4300A-1.1/4

Save $7.13
Ko-ken 4300A-1.1/8 1/2 Sq. Dr. Socket 1.1/8 6 point Length 77mm

Ko-ken 4300A-1.1/8 1/2 Sq. Dr. Socket 1.1/8 6 point Length 77mm

SKU: KK-4300A-1.1/8
MPN: 4300A-1.1/8

Save $7.13
Ko-ken 4300A-1.13/16 1/2 Sq. Dr. Socket 1.13/16 6 point Length 77mm

Ko-ken 4300A-1.13/16 1/2 Sq. Dr. Socket 1.13/16 6 point Length 77mm

SKU: KK-4300A-1.13/16
MPN: 4300A-1.13/16

Save $19.83
Ko-ken 4300A-1.3/16 1/2 Sq. Dr. Socket 1.3/16 6 point Length 77mm

Ko-ken 4300A-1.3/16 1/2 Sq. Dr. Socket 1.3/16 6 point Length 77mm

SKU: KK-4300A-1.3/16
MPN: 4300A-1.3/16

Save $7.13
Ko-ken 4300A-1.3/8 1/2 Sq. Dr. Socket 1.3/8 6 point Length 77mm

Ko-ken 4300A-1.3/8 1/2 Sq. Dr. Socket 1.3/8 6 point Length 77mm

SKU: KK-4300A-1.3/8
MPN: 4300A-1.3/8

Save $11.01
Ko-ken 4300A-1.5/16 1/2 Sq. Dr. Socket 1.5/16 6 point Length 77mm

Ko-ken 4300A-1.5/16 1/2 Sq. Dr. Socket 1.5/16 6 point Length 77mm

SKU: KK-4300A-1.5/16
MPN: 4300A-1.5/16

Save $11.01
Ko-ken 4300A-1.7/16 1/2 Sq. Dr. Socket 1.7/16 6 point Length 77mm

Ko-ken 4300A-1.7/16 1/2 Sq. Dr. Socket 1.7/16 6 point Length 77mm

SKU: KK-4300A-1.7/16
MPN: 4300A-1.7/16

Save $12.06
Ko-ken 4300A-1/2 1/2 Sq. Dr. Socket 1/2 6 point Length 77mm

Ko-ken 4300A-1/2 1/2 Sq. Dr. Socket 1/2 6 point Length 77mm

SKU: KK-4300A-1/2
MPN: 4300A-1/2

Save $3.73