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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.100-3/16 1/2 Sq. Dr. Bit Socket 3/16 Hex Length 100mm

Ko-ken 4012A.100-3/16 1/2 Sq. Dr. Bit Socket 3/16 Hex Length 100mm

SKU: KK-4012A.100-3/16
MPN: 4012A.100-3/16

Save $4.33
Ko-ken 4012A.100-3/4 1/2 Sq. Dr. Bit Socket 3/4 Hex Length 100mm

Ko-ken 4012A.100-3/4 1/2 Sq. Dr. Bit Socket 3/4 Hex Length 100mm

SKU: KK-4012A.100-3/4
MPN: 4012A.100-3/4

Save $5.99
Ko-ken 4012A.100-3/8 1/2 Sq. Dr. Bit Socket 3/8 Hex Length 100mm

Ko-ken 4012A.100-3/8 1/2 Sq. Dr. Bit Socket 3/8 Hex Length 100mm

SKU: KK-4012A.100-3/8
MPN: 4012A.100-3/8

Save $4.49
Ko-ken 4012A.100-5/16 1/2 Sq. Dr. Bit Socket 5/16 Hex Length 100mm

Ko-ken 4012A.100-5/16 1/2 Sq. Dr. Bit Socket 5/16 Hex Length 100mm

SKU: KK-4012A.100-5/16
MPN: 4012A.100-5/16

Save $4.33
Ko-ken 4012A.100-5/32 1/2 Sq. Dr. Bit Socket 5/32 Hex Length 100mm

Ko-ken 4012A.100-5/32 1/2 Sq. Dr. Bit Socket 5/32 Hex Length 100mm

SKU: KK-4012A.100-5/32
MPN: 4012A.100-5/32

Save $4.33
Ko-ken 4012A.100-5/8 1/2 Sq. Dr. Bit Socket 5/8 Hex Length 100mm

Ko-ken 4012A.100-5/8 1/2 Sq. Dr. Bit Socket 5/8 Hex Length 100mm

SKU: KK-4012A.100-5/8
MPN: 4012A.100-5/8

Save $5.29
Ko-ken 4012A.100-7/16 1/2 Sq. Dr. Bit Socket 7/16 Hex Length 100mm

Ko-ken 4012A.100-7/16 1/2 Sq. Dr. Bit Socket 7/16 Hex Length 100mm

SKU: KK-4012A.100-7/16
MPN: 4012A.100-7/16

Save $4.68
Ko-ken 4012A.100-7/32 1/2 Sq. Dr. Bit Socket 7/32 Hex Length 100mm

Ko-ken 4012A.100-7/32 1/2 Sq. Dr. Bit Socket 7/32 Hex Length 100mm

SKU: KK-4012A.100-7/32
MPN: 4012A.100-7/32

Save $4.33
Ko-ken 4012A.100-9/16 1/2 Sq. Dr. Bit Socket 9/16 Hex Length 100mm

Ko-ken 4012A.100-9/16 1/2 Sq. Dr. Bit Socket 9/16 Hex Length 100mm

SKU: KK-4012A.100-9/16
MPN: 4012A.100-9/16

Save $4.73
Ko-ken 4012A.100-9/32 1/2 Sq. Dr. Bit Socket 9/32 Hex Length 100mm

Ko-ken 4012A.100-9/32 1/2 Sq. Dr. Bit Socket 9/32 Hex Length 100mm

SKU: KK-4012A.100-9/32
MPN: 4012A.100-9/32

Save $4.33
Ko-ken 4012A.43-1/2 1/2 Sq. Dr. Bit Socket 1/2 Hex Length 43mm

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

SKU: KK-4012A.43-1/2
MPN: 4012A.43-1/2

Save $3.12
Ko-ken 4012A.43-1/4 1/2 Sq. Dr. Bit Socket 1/4 Hex Length 43mm

Ko-ken 4012A.43-1/4 1/2 Sq. Dr. Bit Socket 1/4 Hex Length 43mm

SKU: KK-4012A.43-1/4
MPN: 4012A.43-1/4

Save $2.84
Ko-ken 4012A.43-11/32 1/2 Sq. Dr. Bit Socket 11/32 Hex Length 43mm

Ko-ken 4012A.43-11/32 1/2 Sq. Dr. Bit Socket 11/32 Hex Length 43mm

SKU: KK-4012A.43-11/32
MPN: 4012A.43-11/32

Save $3.04
Ko-ken 4012A.43-3/16 1/2 Sq. Dr. Bit Socket 3/16 Hex Length 43mm

Ko-ken 4012A.43-3/16 1/2 Sq. Dr. Bit Socket 3/16 Hex Length 43mm

SKU: KK-4012A.43-3/16
MPN: 4012A.43-3/16

Save $2.84
Ko-ken 4012A.43-3/4 1/2 Sq. Dr. Bit Socket 3/4 Hex Length 43mm

Ko-ken 4012A.43-3/4 1/2 Sq. Dr. Bit Socket 3/4 Hex Length 43mm

SKU: KK-4012A.43-3/4
MPN: 4012A.43-3/4

Save $3.40
Ko-ken 4012A.43-3/8 1/2 Sq. Dr. Bit Socket 3/8 Hex Length 43mm

Ko-ken 4012A.43-3/8 1/2 Sq. Dr. Bit Socket 3/8 Hex Length 43mm

SKU: KK-4012A.43-3/8
MPN: 4012A.43-3/8

Save $3.04
Ko-ken 4012A.43-5/16 1/2 Sq. Dr. Bit Socket 5/16 Hex Length 43mm

Ko-ken 4012A.43-5/16 1/2 Sq. Dr. Bit Socket 5/16 Hex Length 43mm

SKU: KK-4012A.43-5/16
MPN: 4012A.43-5/16

Save $2.84
Ko-ken 4012A.43-5/32 1/2 Sq. Dr. Bit Socket 5/32 Hex Length 43mm

Ko-ken 4012A.43-5/32 1/2 Sq. Dr. Bit Socket 5/32 Hex Length 43mm

SKU: KK-4012A.43-5/32
MPN: 4012A.43-5/32

Save $2.84
Ko-ken 4012A.43-5/8 1/2 Sq. Dr. Bit Socket 5/8 Hex Length 43mm

Ko-ken 4012A.43-5/8 1/2 Sq. Dr. Bit Socket 5/8 Hex Length 43mm

SKU: KK-4012A.43-5/8
MPN: 4012A.43-5/8

Save $3.34
Ko-ken 4012A.43-7/16 1/2 Sq. Dr. Bit Socket 7/16 Hex Length 43mm

Ko-ken 4012A.43-7/16 1/2 Sq. Dr. Bit Socket 7/16 Hex Length 43mm

SKU: KK-4012A.43-7/16
MPN: 4012A.43-7/16

Save $3.09
Ko-ken 4012A.43-7/32 1/2 Sq. Dr. Bit Socket 7/32 Hex Length 43mm

Ko-ken 4012A.43-7/32 1/2 Sq. Dr. Bit Socket 7/32 Hex Length 43mm

SKU: KK-4012A.43-7/32
MPN: 4012A.43-7/32

Save $2.84
Ko-ken 4012A.43-7/8 1/2 Sq. Dr. Bit Socket 7/8 Hex Length 43mm

Ko-ken 4012A.43-7/8 1/2 Sq. Dr. Bit Socket 7/8 Hex Length 43mm

SKU: KK-4012A.43-7/8
MPN: 4012A.43-7/8

Save $4.45
Ko-ken 4012A.43-9/16 1/2 Sq. Dr. Bit Socket 9/16 Hex Length 43mm

Ko-ken 4012A.43-9/16 1/2 Sq. Dr. Bit Socket 9/16 Hex Length 43mm

SKU: KK-4012A.43-9/16
MPN: 4012A.43-9/16

Save $3.12
Ko-ken 4012A.43-9/32 1/2 Sq. Dr. Bit Socket 9/32 Hex Length 43mm

Ko-ken 4012A.43-9/32 1/2 Sq. Dr. Bit Socket 9/32 Hex Length 43mm

SKU: KK-4012A.43-9/32
MPN: 4012A.43-9/32

Save $2.84