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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 4012A.75-7/32 1/2 Sq. Dr. Bit Socket 7/32 Hex Length 75mm

Ko-ken 4012A.75-7/32 1/2 Sq. Dr. Bit Socket 7/32 Hex Length 75mm

SKU: KK-4012A.75-7/32
MPN: 4012A.75-7/32

Save $3.21
Ko-ken 4012A.75-7/8 1/2 Sq. Dr. Bit Socket 7/8 Hex Length 75mm

Ko-ken 4012A.75-7/8 1/2 Sq. Dr. Bit Socket 7/8 Hex Length 75mm

SKU: KK-4012A.75-7/8
MPN: 4012A.75-7/8

Save $6.57
Ko-ken 4012A.75-9/16 1/2 Sq. Dr. Bit Socket 9/16 Hex Length 75mm

Ko-ken 4012A.75-9/16 1/2 Sq. Dr. Bit Socket 9/16 Hex Length 75mm

SKU: KK-4012A.75-9/16
MPN: 4012A.75-9/16

Save $3.56
Ko-ken 4012A.75-9/32 1/2 Sq. Dr. Bit Socket 9/32 Hex Length 75mm

Ko-ken 4012A.75-9/32 1/2 Sq. Dr. Bit Socket 9/32 Hex Length 75mm

SKU: KK-4012A.75-9/32
MPN: 4012A.75-9/32

Save $3.21
Ko-ken 4012M.100-10 1/2 Sq. Dr. Bit Socket 10mm Hex Length 100mm

Ko-ken 4012M.100-10 1/2 Sq. Dr. Bit Socket 10mm Hex Length 100mm

SKU: KK-4012M.100-10
MPN: 4012M.100-10

Save $4.08
Ko-ken 4012M.100-11 1/2 Sq. Dr. Bit Socket 11mm Hex Length 100mm

Ko-ken 4012M.100-11 1/2 Sq. Dr. Bit Socket 11mm Hex Length 100mm

SKU: KK-4012M.100-11
MPN: 4012M.100-11

Save $4.24
Ko-ken 4012M.100-12 1/2 Sq. Dr. Bit Socket 12mm Hex Length 100mm

Ko-ken 4012M.100-12 1/2 Sq. Dr. Bit Socket 12mm Hex Length 100mm

SKU: KK-4012M.100-12
MPN: 4012M.100-12

Save $4.24
Ko-ken 4012M.100-13 1/2 Sq. Dr. Bit Socket 13mm Hex Length 100mm

Ko-ken 4012M.100-13 1/2 Sq. Dr. Bit Socket 13mm Hex Length 100mm

SKU: KK-4012M.100-13
MPN: 4012M.100-13

Save $4.30
Ko-ken 4012M.100-14 1/2 Sq. Dr. Bit Socket 14mm Hex Length 100mm

Ko-ken 4012M.100-14 1/2 Sq. Dr. Bit Socket 14mm Hex Length 100mm

SKU: KK-4012M.100-14
MPN: 4012M.100-14

Save $4.30
Ko-ken 4012M.100-15 1/2 Sq. Dr. Bit Socket 15mm Hex Length 100mm

Ko-ken 4012M.100-15 1/2 Sq. Dr. Bit Socket 15mm Hex Length 100mm

SKU: KK-4012M.100-15
MPN: 4012M.100-15

Save $4.81
Ko-ken 4012M.100-16 1/2 Sq. Dr. Bit Socket 16mm Hex Length 100mm

Ko-ken 4012M.100-16 1/2 Sq. Dr. Bit Socket 16mm Hex Length 100mm

SKU: KK-4012M.100-16
MPN: 4012M.100-16

Save $4.81
Ko-ken 4012M.100-17 1/2 Sq. Dr. Bit Socket 17mm Hex Length 100mm

Ko-ken 4012M.100-17 1/2 Sq. Dr. Bit Socket 17mm Hex Length 100mm

SKU: KK-4012M.100-17
MPN: 4012M.100-17

Save $4.81
Ko-ken 4012M.100-18 1/2 Sq. Dr. Bit Socket 18mm Hex Length 100mm

Ko-ken 4012M.100-18 1/2 Sq. Dr. Bit Socket 18mm Hex Length 100mm

SKU: KK-4012M.100-18
MPN: 4012M.100-18

Save $5.45
Ko-ken 4012M.100-19 1/2 Sq. Dr. Bit Socket 19mm Hex Length 100mm

Ko-ken 4012M.100-19 1/2 Sq. Dr. Bit Socket 19mm Hex Length 100mm

SKU: KK-4012M.100-19
MPN: 4012M.100-19

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Ko-ken 4012M.100-4 1/2 Sq. Dr. Bit Socket 4mm Hex Length 100mm

Ko-ken 4012M.100-4 1/2 Sq. Dr. Bit Socket 4mm Hex Length 100mm

SKU: KK-4012M.100-4
MPN: 4012M.100-4

Save $3.93
Ko-ken 4012M.100-5 1/2 Sq. Dr. Bit Socket 5mm Hex Length 100mm

Ko-ken 4012M.100-5 1/2 Sq. Dr. Bit Socket 5mm Hex Length 100mm

SKU: KK-4012M.100-5
MPN: 4012M.100-5

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Ko-ken 4012M.100-6 1/2 Sq. Dr. Bit Socket 6mm Hex Length 100mm

Ko-ken 4012M.100-6 1/2 Sq. Dr. Bit Socket 6mm Hex Length 100mm

SKU: KK-4012M.100-6
MPN: 4012M.100-6

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Ko-ken 4012M.100-7 1/2 Sq. Dr. Bit Socket 7mm Hex Length 100mm

Ko-ken 4012M.100-7 1/2 Sq. Dr. Bit Socket 7mm Hex Length 100mm

SKU: KK-4012M.100-7
MPN: 4012M.100-7

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Ko-ken 4012M.100-8 1/2 Sq. Dr. Bit Socket 8mm Hex Length 100mm

Ko-ken 4012M.100-8 1/2 Sq. Dr. Bit Socket 8mm Hex Length 100mm

SKU: KK-4012M.100-8
MPN: 4012M.100-8

Save $3.93
Ko-ken 4012M.100-9 1/2 Sq. Dr. Bit Socket 9mm Hex Length 100mm

Ko-ken 4012M.100-9 1/2 Sq. Dr. Bit Socket 9mm Hex Length 100mm

SKU: KK-4012M.100-9
MPN: 4012M.100-9

Save $4.08
Ko-ken 4012M.43-10 1/2 Sq. Dr. Bit Socket 10mm Hex Length 43mm

Ko-ken 4012M.43-10 1/2 Sq. Dr. Bit Socket 10mm Hex Length 43mm

SKU: KK-4012M.43-10
MPN: 4012M.43-10

Save $2.76
Ko-ken 4012M.43-11 1/2 Sq. Dr. Bit Socket 11mm Hex Length 43mm

Ko-ken 4012M.43-11 1/2 Sq. Dr. Bit Socket 11mm Hex Length 43mm

SKU: KK-4012M.43-11
MPN: 4012M.43-11

Save $2.81
Ko-ken 4012M.43-12 1/2 Sq. Dr. Bit Socket 12mm Hex Length 43mm

Ko-ken 4012M.43-12 1/2 Sq. Dr. Bit Socket 12mm Hex Length 43mm

SKU: KK-4012M.43-12
MPN: 4012M.43-12

Save $2.81
Ko-ken 4012M.43-13 1/2 Sq. Dr. Bit Socket 13mm Hex Length 43mm

Ko-ken 4012M.43-13 1/2 Sq. Dr. Bit Socket 13mm Hex Length 43mm

SKU: KK-4012M.43-13
MPN: 4012M.43-13

Save $2.84