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KK Hand Tools

Freer Tool & Supply is your trusted, ISO-certified source for Ko-Ken hand tools—delivering the complete lineup of sockets, ratchets, breaker bars, extension bars, and specialty tools engineered for professional results. Every Ko-Ken hand tool is crafted from high-grade chrome vanadium steel and undergoes precision heat treatment, ensuring exceptional durability and long-term performance in demanding industrial and automotive environments.


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 3405A-13/32 3/8 Sq. Dr. Socket 13/32 12 point Length 26mm

Ko-ken 3405A-13/32 3/8 Sq. Dr. Socket 13/32 12 point Length 26mm

SKU: KK-3405A-13/32
MPN: 3405A-13/32

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Ko-ken 3440A-1/2 3/8 Sq. Dr. Universal Socket 1/2 6 point Length 51mm

Ko-ken 3440A-1/2 3/8 Sq. Dr. Universal Socket 1/2 6 point Length 51mm

SKU: KK-3440A-1/2
MPN: 3440A-1/2

Save $7.30
Ko-ken 3440A-11/16 3/8 Sq. Dr. Universal Socket 11/16 6 point Length 54.5mm

Ko-ken 3440A-11/16 3/8 Sq. Dr. Universal Socket 11/16 6 point Length 54.5mm

SKU: KK-3440A-11/16
MPN: 3440A-11/16

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Ko-ken 3440A-3/4 3/8 Sq. Dr. Universal Socket 3/4 6 point Length 56.5mm

Ko-ken 3440A-3/4 3/8 Sq. Dr. Universal Socket 3/4 6 point Length 56.5mm

SKU: KK-3440A-3/4
MPN: 3440A-3/4

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Ko-ken 3440A-3/8 3/8 Sq. Dr. Universal Socket 3/8 6 point Length 48mm

Ko-ken 3440A-3/8 3/8 Sq. Dr. Universal Socket 3/8 6 point Length 48mm

SKU: KK-3440A-3/8
MPN: 3440A-3/8

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Ko-ken 3440A-5/16 3/8 Sq. Dr. Universal Socket 5/16 6 point Length 47mm

Ko-ken 3440A-5/16 3/8 Sq. Dr. Universal Socket 5/16 6 point Length 47mm

SKU: KK-3440A-5/16
MPN: 3440A-5/16

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Ko-ken 3440A-5/8 3/8 Sq. Dr. Universal Socket 5/8 6 point Length 53.5mm

Ko-ken 3440A-5/8 3/8 Sq. Dr. Universal Socket 5/8 6 point Length 53.5mm

SKU: KK-3440A-5/8
MPN: 3440A-5/8

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Ko-ken 3440A-7/16 3/8 Sq. Dr. Universal Socket 7/16 6 point Length 49.5mm

Ko-ken 3440A-7/16 3/8 Sq. Dr. Universal Socket 7/16 6 point Length 49.5mm

SKU: KK-3440A-7/16
MPN: 3440A-7/16

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Ko-ken 3440A-9/16 3/8 Sq. Dr. Universal Socket 9/16 6 point Length 51mm

Ko-ken 3440A-9/16 3/8 Sq. Dr. Universal Socket 9/16 6 point Length 51mm

SKU: KK-3440A-9/16
MPN: 3440A-9/16

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Ko-ken 3440M-10 3/8 Sq. Dr. Universal Socket 10mm 6 point Length 48.5mm

Ko-ken 3440M-10 3/8 Sq. Dr. Universal Socket 10mm 6 point Length 48.5mm

SKU: KK-3440M-10
MPN: 3440M-10

Save $6.45
Ko-ken 3440M-11 3/8 Sq. Dr. Universal Socket 11mm 6 point Length 49.5mm

Ko-ken 3440M-11 3/8 Sq. Dr. Universal Socket 11mm 6 point Length 49.5mm

SKU: KK-3440M-11
MPN: 3440M-11

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Ko-ken 3440M-12 3/8 Sq. Dr. Universal Socket 12mm 6 point Length 50mm

Ko-ken 3440M-12 3/8 Sq. Dr. Universal Socket 12mm 6 point Length 50mm

SKU: KK-3440M-12
MPN: 3440M-12

Save $6.63
Ko-ken 3440M-13 3/8 Sq. Dr. Universal Socket 13mm 6 point Length 51mm

Ko-ken 3440M-13 3/8 Sq. Dr. Universal Socket 13mm 6 point Length 51mm

SKU: KK-3440M-13
MPN: 3440M-13

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Ko-ken 3440M-14 3/8 Sq. Dr. Universal Socket 14mm 6 point Length 51mm

Ko-ken 3440M-14 3/8 Sq. Dr. Universal Socket 14mm 6 point Length 51mm

SKU: KK-3440M-14
MPN: 3440M-14

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Ko-ken 3440M-15 3/8 Sq. Dr. Universal Socket 15mm 6 point Length 53.5mm

Ko-ken 3440M-15 3/8 Sq. Dr. Universal Socket 15mm 6 point Length 53.5mm

SKU: KK-3440M-15
MPN: 3440M-15

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Ko-ken 3440M-16 3/8 Sq. Dr. Universal Socket 16mm 6 point Length 53.5mm

Ko-ken 3440M-16 3/8 Sq. Dr. Universal Socket 16mm 6 point Length 53.5mm

SKU: KK-3440M-16
MPN: 3440M-16

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Ko-ken 3440M-17 3/8 Sq. Dr. Universal Socket 17mm 6 point Length 54.5mm

Ko-ken 3440M-17 3/8 Sq. Dr. Universal Socket 17mm 6 point Length 54.5mm

SKU: KK-3440M-17
MPN: 3440M-17

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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

Save $6.96
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

Save $8.05
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 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

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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