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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 4400A-15/16 1/2 Sq. Dr. Socket 15/16 6 point Length 42mm

Ko-ken 4400A-15/16 1/2 Sq. Dr. Socket 15/16 6 point Length 42mm

SKU: KK-4400A-15/16
MPN: 4400A-15/16

Save $2.25
Ko-ken 4400A-19/32 1/2 Sq. Dr. Socket 19/32 6 point Length 37mm

Ko-ken 4400A-19/32 1/2 Sq. Dr. Socket 19/32 6 point Length 37mm

SKU: KK-4400A-19/32
MPN: 4400A-19/32

Save $1.61
Ko-ken 4400A-21/32 1/2 Sq. Dr. Socket 21/32 6 point Length 37mm

Ko-ken 4400A-21/32 1/2 Sq. Dr. Socket 21/32 6 point Length 37mm

SKU: KK-4400A-21/32
MPN: 4400A-21/32

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Ko-ken 4400A-25/32 1/2 Sq. Dr. Socket 25/32 6 point Length 38mm

Ko-ken 4400A-25/32 1/2 Sq. Dr. Socket 25/32 6 point Length 38mm

SKU: KK-4400A-25/32
MPN: 4400A-25/32

Save $2.08
Ko-ken 4400A-3/4 1/2 Sq. Dr. Socket 3/4 6 point Length 38mm

Ko-ken 4400A-3/4 1/2 Sq. Dr. Socket 3/4 6 point Length 38mm

SKU: KK-4400A-3/4
MPN: 4400A-3/4

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Ko-ken 4400A-3/8 1/2 Sq. Dr. Socket 3/8 6 point Length 37mm

Ko-ken 4400A-3/8 1/2 Sq. Dr. Socket 3/8 6 point Length 37mm

SKU: KK-4400A-3/8
MPN: 4400A-3/8

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Ko-ken 4400A-31/32 1/2 Sq. Dr. Socket 31/32 6 point Length 42mm

Ko-ken 4400A-31/32 1/2 Sq. Dr. Socket 31/32 6 point Length 42mm

SKU: KK-4400A-31/32
MPN: 4400A-31/32

Save $2.92
Ko-ken 4400A-5/16 1/2 Sq. Dr. Socket 5/16 6 point Length 36mm

Ko-ken 4400A-5/16 1/2 Sq. Dr. Socket 5/16 6 point Length 36mm

SKU: KK-4400A-5/16
MPN: 4400A-5/16

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Ko-ken 4400A-5/8 1/2 Sq. Dr. Socket 5/8 6 point Length 37mm

Ko-ken 4400A-5/8 1/2 Sq. Dr. Socket 5/8 6 point Length 37mm

SKU: KK-4400A-5/8
MPN: 4400A-5/8

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Ko-ken 4400A-7/16 1/2 Sq. Dr. Socket 7/16 6 point Length 37mm

Ko-ken 4400A-7/16 1/2 Sq. Dr. Socket 7/16 6 point Length 37mm

SKU: KK-4400A-7/16
MPN: 4400A-7/16

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Ko-ken 4400A-7/8 1/2 Sq. Dr. Socket 7/8 6 point Length 40mm

Ko-ken 4400A-7/8 1/2 Sq. Dr. Socket 7/8 6 point Length 40mm

SKU: KK-4400A-7/8
MPN: 4400A-7/8

Save $2.25
Ko-ken 4400A-9/16 1/2 Sq. Dr. Socket 9/16 6 point Length 37mm

Ko-ken 4400A-9/16 1/2 Sq. Dr. Socket 9/16 6 point Length 37mm

SKU: KK-4400A-9/16
MPN: 4400A-9/16

Save $1.58
Ko-ken 4400M-10 1/2 Sq. Dr. Socket 10mm 6 point Length 37mm

Ko-ken 4400M-10 1/2 Sq. Dr. Socket 10mm 6 point Length 37mm

SKU: KK-4400M-10
MPN: 4400M-10

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Ko-ken 4400M-11 1/2 Sq. Dr. Socket 11mm 6 point Length 37mm

Ko-ken 4400M-11 1/2 Sq. Dr. Socket 11mm 6 point Length 37mm

SKU: KK-4400M-11
MPN: 4400M-11

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Ko-ken 4400M-12 1/2 Sq. Dr. Socket 12mm 6 point Length 37mm

Ko-ken 4400M-12 1/2 Sq. Dr. Socket 12mm 6 point Length 37mm

SKU: KK-4400M-12
MPN: 4400M-12

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Ko-ken 4400M-13 1/2 Sq. Dr. Socket 13mm 6 point Length 37mm

Ko-ken 4400M-13 1/2 Sq. Dr. Socket 13mm 6 point Length 37mm

SKU: KK-4400M-13
MPN: 4400M-13

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Ko-ken 4400M-14 1/2 Sq. Dr. Socket 14mm 6 point Length 37mm

Ko-ken 4400M-14 1/2 Sq. Dr. Socket 14mm 6 point Length 37mm

SKU: KK-4400M-14
MPN: 4400M-14

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Ko-ken 4400M-15 1/2 Sq. Dr. Socket 15mm 6 point Length 37mm

Ko-ken 4400M-15 1/2 Sq. Dr. Socket 15mm 6 point Length 37mm

SKU: KK-4400M-15
MPN: 4400M-15

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Ko-ken 4400M-16 1/2 Sq. Dr. Socket 16mm 6 point Length 37mm

Ko-ken 4400M-16 1/2 Sq. Dr. Socket 16mm 6 point Length 37mm

SKU: KK-4400M-16
MPN: 4400M-16

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Ko-ken 4400M-17 1/2 Sq. Dr. Socket 17mm 6 point Length 37mm

Ko-ken 4400M-17 1/2 Sq. Dr. Socket 17mm 6 point Length 37mm

SKU: KK-4400M-17
MPN: 4400M-17

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Ko-ken 4400M-18 1/2 Sq. Dr. Socket 18mm 6 point Length 37mm

Ko-ken 4400M-18 1/2 Sq. Dr. Socket 18mm 6 point Length 37mm

SKU: KK-4400M-18
MPN: 4400M-18

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Ko-ken 4400M-19 1/2 Sq. Dr. Socket 19mm 6 point Length 38mm

Ko-ken 4400M-19 1/2 Sq. Dr. Socket 19mm 6 point Length 38mm

SKU: KK-4400M-19
MPN: 4400M-19

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Ko-ken 4400M-20 1/2 Sq. Dr. Socket 20mm 6 point Length 38mm

Ko-ken 4400M-20 1/2 Sq. Dr. Socket 20mm 6 point Length 38mm

SKU: KK-4400M-20
MPN: 4400M-20

Save $1.89
Ko-ken 4400M-21 1/2 Sq. Dr. Socket 21mm 6 point Length 38mm

Ko-ken 4400M-21 1/2 Sq. Dr. Socket 21mm 6 point Length 38mm

SKU: KK-4400M-21
MPN: 4400M-21

Save $1.89