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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 4010M.100-4 1/2 Sq. Dr. Bit Socket 4mm Hex Length 100mm

Ko-ken 4010M.100-4 1/2 Sq. Dr. Bit Socket 4mm Hex Length 100mm

SKU: KK-4010M.100-4
MPN: 4010M.100-4

Save $2.51
Ko-ken 4010M.100-5 1/2 Sq. Dr. Bit Socket 5mm Hex Length 100mm

Ko-ken 4010M.100-5 1/2 Sq. Dr. Bit Socket 5mm Hex Length 100mm

SKU: KK-4010M.100-5
MPN: 4010M.100-5

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Ko-ken 4010M.100-6 1/2 Sq. Dr. Bit Socket 6mm Hex Length 100mm

Ko-ken 4010M.100-6 1/2 Sq. Dr. Bit Socket 6mm Hex Length 100mm

SKU: KK-4010M.100-6
MPN: 4010M.100-6

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Ko-ken 4010M.100-7 1/2 Sq. Dr. Bit Socket 7mm Hex Length 100mm

Ko-ken 4010M.100-7 1/2 Sq. Dr. Bit Socket 7mm Hex Length 100mm

SKU: KK-4010M.100-7
MPN: 4010M.100-7

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Ko-ken 4010M.100-8 1/2 Sq. Dr. Bit Socket 8mm Hex Length 100mm

Ko-ken 4010M.100-8 1/2 Sq. Dr. Bit Socket 8mm Hex Length 100mm

SKU: KK-4010M.100-8
MPN: 4010M.100-8

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Ko-ken 4010M.100-8(12P) 1/2 Sq. Dr. Bit Socket 8mm Double-Hex Length 100mm For Cylinder head bolt

Ko-ken 4010M.100-8(12P) 1/2 Sq. Dr. Bit Socket 8mm Double-Hex Length 100mm For Cylinder head bolt

SKU: KK-4010M.100-8(12P)
MPN: 4010M.100-8(12P)

Save $3.65
Ko-ken 4010M.100-9 1/2 Sq. Dr. Bit Socket 9mm Hex Length 100mm

Ko-ken 4010M.100-9 1/2 Sq. Dr. Bit Socket 9mm Hex Length 100mm

SKU: KK-4010M.100-9
MPN: 4010M.100-9

Save $2.70
Ko-ken 4010M.160-10 1/2 Sq. Dr. Bit Socket 10mm Hex Length 160mm

Ko-ken 4010M.160-10 1/2 Sq. Dr. Bit Socket 10mm Hex Length 160mm

SKU: KK-4010M.160-10
MPN: 4010M.160-10

Save $3.33
Ko-ken 4010M.160-12 1/2 Sq. Dr. Bit Socket 12mm Hex Length 160mm

Ko-ken 4010M.160-12 1/2 Sq. Dr. Bit Socket 12mm Hex Length 160mm

SKU: KK-4010M.160-12
MPN: 4010M.160-12

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Ko-ken 4010M.160-14 1/2 Sq. Dr. Bit Socket 14mm Hex Length 160mm

Ko-ken 4010M.160-14 1/2 Sq. Dr. Bit Socket 14mm Hex Length 160mm

SKU: KK-4010M.160-14
MPN: 4010M.160-14

Save $3.98
Ko-ken 4010M.160-17 1/2 Sq. Dr. Bit Socket 17mm Hex Length 160mm

Ko-ken 4010M.160-17 1/2 Sq. Dr. Bit Socket 17mm Hex Length 160mm

SKU: KK-4010M.160-17
MPN: 4010M.160-17

Save $4.69
Ko-ken 4010M.160-19 1/2 Sq. Dr. Bit Socket 19mm Hex Length 160mm

Ko-ken 4010M.160-19 1/2 Sq. Dr. Bit Socket 19mm Hex Length 160mm

SKU: KK-4010M.160-19
MPN: 4010M.160-19

Save $5.06
Ko-ken 4010M.160-4 1/2 Sq. Dr. Bit Socket 4mm Hex Length 160mm

Ko-ken 4010M.160-4 1/2 Sq. Dr. Bit Socket 4mm Hex Length 160mm

SKU: KK-4010M.160-4
MPN: 4010M.160-4

Save $3.01
Ko-ken 4010M.160-5 1/2 Sq. Dr. Bit Socket 5mm Hex Length 160mm

Ko-ken 4010M.160-5 1/2 Sq. Dr. Bit Socket 5mm Hex Length 160mm

SKU: KK-4010M.160-5
MPN: 4010M.160-5

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Ko-ken 4010M.160-6 1/2 Sq. Dr. Bit Socket 6mm Hex Length 160mm

Ko-ken 4010M.160-6 1/2 Sq. Dr. Bit Socket 6mm Hex Length 160mm

SKU: KK-4010M.160-6
MPN: 4010M.160-6

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Ko-ken 4010M.160-7 1/2 Sq. Dr. Bit Socket 7mm Hex Length 160mm

Ko-ken 4010M.160-7 1/2 Sq. Dr. Bit Socket 7mm Hex Length 160mm

SKU: KK-4010M.160-7
MPN: 4010M.160-7

Save $3.07
Ko-ken 4010M.160-8 1/2 Sq. Dr. Bit Socket 8mm Hex Length 160mm

Ko-ken 4010M.160-8 1/2 Sq. Dr. Bit Socket 8mm Hex Length 160mm

SKU: KK-4010M.160-8
MPN: 4010M.160-8

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Ko-ken 4010M.50-10 1/2 Sq. Dr. Bit Socket 10mm Hex Length 50mm

Ko-ken 4010M.50-10 1/2 Sq. Dr. Bit Socket 10mm Hex Length 50mm

SKU: KK-4010M.50-10
MPN: 4010M.50-10

Save $2.35
Ko-ken 4010M.50-12 1/2 Sq. Dr. Bit Socket 12mm Hex Length 50mm

Ko-ken 4010M.50-12 1/2 Sq. Dr. Bit Socket 12mm Hex Length 50mm

SKU: KK-4010M.50-12
MPN: 4010M.50-12

Save $2.57
Ko-ken 4010M.50-13 1/2 Sq. Dr. Bit Socket 13mm Hex Length 50mm

Ko-ken 4010M.50-13 1/2 Sq. Dr. Bit Socket 13mm Hex Length 50mm

SKU: KK-4010M.50-13
MPN: 4010M.50-13

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Ko-ken 4010M.50-14 1/2 Sq. Dr. Bit Socket 14mm Hex Length 50mm

Ko-ken 4010M.50-14 1/2 Sq. Dr. Bit Socket 14mm Hex Length 50mm

SKU: KK-4010M.50-14
MPN: 4010M.50-14

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Ko-ken 4010M.50-16 1/2 Sq. Dr. Bit Socket 16mm Hex Length 50mm

Ko-ken 4010M.50-16 1/2 Sq. Dr. Bit Socket 16mm Hex Length 50mm

SKU: KK-4010M.50-16
MPN: 4010M.50-16

Save $3.28
Ko-ken 4010M.50-17 1/2 Sq. Dr. Bit Socket 17mm Hex Length 50mm

Ko-ken 4010M.50-17 1/2 Sq. Dr. Bit Socket 17mm Hex Length 50mm

SKU: KK-4010M.50-17
MPN: 4010M.50-17

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Ko-ken 4010M.50-18 1/2 Sq. Dr. Bit Socket 18mm Hex Length 50mm

Ko-ken 4010M.50-18 1/2 Sq. Dr. Bit Socket 18mm Hex Length 50mm

SKU: KK-4010M.50-18
MPN: 4010M.50-18

Save $3.65