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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 4012M.43-14 1/2 Sq. Dr. Bit Socket 14mm Hex Length 43mm

Ko-ken 4012M.43-14 1/2 Sq. Dr. Bit Socket 14mm Hex Length 43mm

SKU: KK-4012M.43-14
MPN: 4012M.43-14

Save $2.84
Ko-ken 4012M.43-15 1/2 Sq. Dr. Bit Socket 15mm Hex Length 43mm

Ko-ken 4012M.43-15 1/2 Sq. Dr. Bit Socket 15mm Hex Length 43mm

SKU: KK-4012M.43-15
MPN: 4012M.43-15

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

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

SKU: KK-4012M.43-16
MPN: 4012M.43-16

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Ko-ken 4012M.43-17 1/2 Sq. Dr. Bit Socket 17mm Hex Length 43mm

Ko-ken 4012M.43-17 1/2 Sq. Dr. Bit Socket 17mm Hex Length 43mm

SKU: KK-4012M.43-17
MPN: 4012M.43-17

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Ko-ken 4012M.43-18 1/2 Sq. Dr. Bit Socket 18mm Hex Length 43mm

Ko-ken 4012M.43-18 1/2 Sq. Dr. Bit Socket 18mm Hex Length 43mm

SKU: KK-4012M.43-18
MPN: 4012M.43-18

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Ko-ken 4012M.43-19 1/2 Sq. Dr. Bit Socket 19mm Hex Length 43mm

Ko-ken 4012M.43-19 1/2 Sq. Dr. Bit Socket 19mm Hex Length 43mm

SKU: KK-4012M.43-19
MPN: 4012M.43-19

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Ko-ken 4012M.43-20 1/2 Sq. Dr. Bit Socket 20mm Hex Length 43mm

Ko-ken 4012M.43-20 1/2 Sq. Dr. Bit Socket 20mm Hex Length 43mm

SKU: KK-4012M.43-20
MPN: 4012M.43-20

Save $4.05
Ko-ken 4012M.43-21 1/2 Sq. Dr. Bit Socket 21mm Hex Length 43mm

Ko-ken 4012M.43-21 1/2 Sq. Dr. Bit Socket 21mm Hex Length 43mm

SKU: KK-4012M.43-21
MPN: 4012M.43-21

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Ko-ken 4012M.43-22 1/2 Sq. Dr. Bit Socket 22mm Hex Length 43mm

Ko-ken 4012M.43-22 1/2 Sq. Dr. Bit Socket 22mm Hex Length 43mm

SKU: KK-4012M.43-22
MPN: 4012M.43-22

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Ko-ken 4012M.43-23 1/2 Sq. Dr. Bit Socket 23mm Hex Length 43mm

Ko-ken 4012M.43-23 1/2 Sq. Dr. Bit Socket 23mm Hex Length 43mm

SKU: KK-4012M.43-23
MPN: 4012M.43-23

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Ko-ken 4012M.43-24 1/2 Sq. Dr. Bit Socket 24mm Hex Length 43mm

Ko-ken 4012M.43-24 1/2 Sq. Dr. Bit Socket 24mm Hex Length 43mm

SKU: KK-4012M.43-24
MPN: 4012M.43-24

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Ko-ken 4012M.43-27 1/2 Sq. Dr. Bit Socket 27mm Hex Length 43mm

Ko-ken 4012M.43-27 1/2 Sq. Dr. Bit Socket 27mm Hex Length 43mm

SKU: KK-4012M.43-27
MPN: 4012M.43-27

Save $5.29
Ko-ken 4012M.43-4 1/2 Sq. Dr. Bit Socket 4mm Hex Length 43mm

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

SKU: KK-4012M.43-4
MPN: 4012M.43-4

Save $2.57
Ko-ken 4012M.43-5 1/2 Sq. Dr. Bit Socket 5mm Hex Length 43mm

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

SKU: KK-4012M.43-5
MPN: 4012M.43-5

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Ko-ken 4012M.43-6 1/2 Sq. Dr. Bit Socket 6mm Hex Length 43mm

Ko-ken 4012M.43-6 1/2 Sq. Dr. Bit Socket 6mm Hex Length 43mm

SKU: KK-4012M.43-6
MPN: 4012M.43-6

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

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

SKU: KK-4012M.43-7
MPN: 4012M.43-7

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

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

SKU: KK-4012M.43-8
MPN: 4012M.43-8

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

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

SKU: KK-4012M.43-9
MPN: 4012M.43-9

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Ko-ken 4012M.60-10 1/2 Sq. Dr. Bit Socket 10mm Hex Length 60mm

Ko-ken 4012M.60-10 1/2 Sq. Dr. Bit Socket 10mm Hex Length 60mm

SKU: KK-4012M.60-10
MPN: 4012M.60-10

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Ko-ken 4012M.60-11 1/2 Sq. Dr. Bit Socket 11mm Hex Length 60mm

Ko-ken 4012M.60-11 1/2 Sq. Dr. Bit Socket 11mm Hex Length 60mm

SKU: KK-4012M.60-11
MPN: 4012M.60-11

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Ko-ken 4012M.60-12 1/2 Sq. Dr. Bit Socket 12mm Hex Length 60mm

Ko-ken 4012M.60-12 1/2 Sq. Dr. Bit Socket 12mm Hex Length 60mm

SKU: KK-4012M.60-12
MPN: 4012M.60-12

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Ko-ken 4012M.60-13 1/2 Sq. Dr. Bit Socket 13mm Hex Length 60mm

Ko-ken 4012M.60-13 1/2 Sq. Dr. Bit Socket 13mm Hex Length 60mm

SKU: KK-4012M.60-13
MPN: 4012M.60-13

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Ko-ken 4012M.60-14 1/2 Sq. Dr. Bit Socket 14mm Hex Length 60mm

Ko-ken 4012M.60-14 1/2 Sq. Dr. Bit Socket 14mm Hex Length 60mm

SKU: KK-4012M.60-14
MPN: 4012M.60-14

Save $2.99
Ko-ken 4012M.60-15 1/2 Sq. Dr. Bit Socket 15mm Hex Length 60mm

Ko-ken 4012M.60-15 1/2 Sq. Dr. Bit Socket 15mm Hex Length 60mm

SKU: KK-4012M.60-15
MPN: 4012M.60-15

Save $3.15