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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 3440M-18 3/8 Sq. Dr. Universal Socket 18mm 6 point Length 54.5mm

Ko-ken 3440M-18 3/8 Sq. Dr. Universal Socket 18mm 6 point Length 54.5mm

SKU: KK-3440M-18
MPN: 3440M-18

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Ko-ken 3440M-19 3/8 Sq. Dr. Universal Socket 19mm 6 point Length 56.5mm

Ko-ken 3440M-19 3/8 Sq. Dr. Universal Socket 19mm 6 point Length 56.5mm

SKU: KK-3440M-19
MPN: 3440M-19

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Ko-ken 3440M-21 3/8 Sq. Dr. Universal Socket 21mm 6 point Length 56.5mm

Ko-ken 3440M-21 3/8 Sq. Dr. Universal Socket 21mm 6 point Length 56.5mm

SKU: KK-3440M-21
MPN: 3440M-21

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Ko-ken 3440M-8 3/8 Sq. Dr. Universal Socket 8mm 6 point Length 47mm

Ko-ken 3440M-8 3/8 Sq. Dr. Universal Socket 8mm 6 point Length 47mm

SKU: KK-3440M-8
MPN: 3440M-8

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Ko-ken 3440M-9 3/8 Sq. Dr. Universal Socket 9mm 6 point Length 47.5mm

Ko-ken 3440M-9 3/8 Sq. Dr. Universal Socket 9mm 6 point Length 47.5mm

SKU: KK-3440M-9
MPN: 3440M-9

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Ko-ken 3440T-E10 3/8 Sq. Dr. Universal Socket TORX E10 Length 47.7mm

Ko-ken 3440T-E10 3/8 Sq. Dr. Universal Socket TORX E10 Length 47.7mm

SKU: KK-3440T-E10
MPN: 3440T-E10

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Ko-ken 3440T-E12 3/8 Sq. Dr. Universal Socket TORX E12 Length 48.8mm

Ko-ken 3440T-E12 3/8 Sq. Dr. Universal Socket TORX E12 Length 48.8mm

SKU: KK-3440T-E12
MPN: 3440T-E12

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Ko-ken 3440T-E14 3/8 Sq. Dr. Universal Socket TORX E14 Length 50.1mm

Ko-ken 3440T-E14 3/8 Sq. Dr. Universal Socket TORX E14 Length 50.1mm

SKU: KK-3440T-E14
MPN: 3440T-E14

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Ko-ken 3440T-E16 3/8 Sq. Dr. Universal Socket TORX E16 Length 51.3mm

Ko-ken 3440T-E16 3/8 Sq. Dr. Universal Socket TORX E16 Length 51.3mm

SKU: KK-3440T-E16
MPN: 3440T-E16

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Ko-ken 3440T-E18 3/8 Sq. Dr. Universal Socket TORX E18 Length 53.5mm

Ko-ken 3440T-E18 3/8 Sq. Dr. Universal Socket TORX E18 Length 53.5mm

SKU: KK-3440T-E18
MPN: 3440T-E18

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Ko-ken 3440T-E20 3/8 Sq. Dr. Universal Socket TORX E20 Length 54.9mm

Ko-ken 3440T-E20 3/8 Sq. Dr. Universal Socket TORX E20 Length 54.9mm

SKU: KK-3440T-E20
MPN: 3440T-E20

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Ko-ken 3440T-E6 3/8 Sq. Dr. Universal Socket TORX E6 Length 44.9mm

Ko-ken 3440T-E6 3/8 Sq. Dr. Universal Socket TORX E6 Length 44.9mm

SKU: KK-3440T-E6
MPN: 3440T-E6

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Ko-ken 3440T-E8 3/8 Sq. Dr. Universal Socket TORX E8 Length 46.5mm

Ko-ken 3440T-E8 3/8 Sq. Dr. Universal Socket TORX E8 Length 46.5mm

SKU: KK-3440T-E8
MPN: 3440T-E8

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Ko-ken 3445A-1/2 3/8 Sq. Dr. Universal Socket 1/2 12 point Length 51mm

Ko-ken 3445A-1/2 3/8 Sq. Dr. Universal Socket 1/2 12 point Length 51mm

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

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Ko-ken 3445A-11/16 3/8 Sq. Dr. Universal Socket 11/16 12 point Length 54.5mm

Ko-ken 3445A-11/16 3/8 Sq. Dr. Universal Socket 11/16 12 point Length 54.5mm

SKU: KK-3445A-11/16
MPN: 3445A-11/16

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Ko-ken 3445A-3/4 3/8 Sq. Dr. Universal Socket 3/4 12 point Length 56.5mm

Ko-ken 3445A-3/4 3/8 Sq. Dr. Universal Socket 3/4 12 point Length 56.5mm

SKU: KK-3445A-3/4
MPN: 3445A-3/4

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Ko-ken 3445A-3/8 3/8 Sq. Dr. Universal Socket 3/8 12 point Length 48mm

Ko-ken 3445A-3/8 3/8 Sq. Dr. Universal Socket 3/8 12 point Length 48mm

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

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Ko-ken 3445A-5/16 3/8 Sq. Dr. Universal Socket 5/16 12 point Length 47mm

Ko-ken 3445A-5/16 3/8 Sq. Dr. Universal Socket 5/16 12 point Length 47mm

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

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

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

SKU: KK-3445A-5/8
MPN: 3445A-5/8

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Ko-ken 3445A-7/16 3/8 Sq. Dr. Universal Socket 7/16 12 point Length 49.5mm

Ko-ken 3445A-7/16 3/8 Sq. Dr. Universal Socket 7/16 12 point Length 49.5mm

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

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Ko-ken 3445A-9/16 3/8 Sq. Dr. Universal Socket 9/16 12 point Length 51mm

Ko-ken 3445A-9/16 3/8 Sq. Dr. Universal Socket 9/16 12 point Length 51mm

SKU: KK-3445A-9/16
MPN: 3445A-9/16

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Ko-ken 3445M-10 3/8 Sq. Dr. Universal Socket 10mm 12 point Length 48.5mm

Ko-ken 3445M-10 3/8 Sq. Dr. Universal Socket 10mm 12 point Length 48.5mm

SKU: KK-3445M-10
MPN: 3445M-10

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Ko-ken 3445M-11 3/8 Sq. Dr. Universal Socket 11mm 12 point Length 49.5mm

Ko-ken 3445M-11 3/8 Sq. Dr. Universal Socket 11mm 12 point Length 49.5mm

SKU: KK-3445M-11
MPN: 3445M-11

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Ko-ken 3445M-12 3/8 Sq. Dr. Universal Socket 12mm 12 point Length 50mm

Ko-ken 3445M-12 3/8 Sq. Dr. Universal Socket 12mm 12 point Length 50mm

SKU: KK-3445M-12
MPN: 3445M-12

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