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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 3445M-10 3/8 Sq. Dr. Universal Socket 10mm 12 point Length 48.5mm

Ko-ken 3445M-10 3/8 Sq. Dr. Universal Socket 10mm 12 point Length 48.5mm

SKU: KK-3445M-10
MPN: 3445M-10

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Ko-ken 3445M-11 3/8 Sq. Dr. Universal Socket 11mm 12 point Length 49.5mm

Ko-ken 3445M-11 3/8 Sq. Dr. Universal Socket 11mm 12 point Length 49.5mm

SKU: KK-3445M-11
MPN: 3445M-11

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Ko-ken 3445M-12 3/8 Sq. Dr. Universal Socket 12mm 12 point Length 50mm

Ko-ken 3445M-12 3/8 Sq. Dr. Universal Socket 12mm 12 point Length 50mm

SKU: KK-3445M-12
MPN: 3445M-12

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Ko-ken 3445M-13 3/8 Sq. Dr. Universal Socket 13mm 12 point Length 51mm

Ko-ken 3445M-13 3/8 Sq. Dr. Universal Socket 13mm 12 point Length 51mm

SKU: KK-3445M-13
MPN: 3445M-13

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Ko-ken 3445M-14 3/8 Sq. Dr. Universal Socket 14mm 12 point Length 51mm

Ko-ken 3445M-14 3/8 Sq. Dr. Universal Socket 14mm 12 point Length 51mm

SKU: KK-3445M-14
MPN: 3445M-14

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Ko-ken 3445M-15 3/8 Sq. Dr. Universal Socket 15mm 12 point Length 53.5mm

Ko-ken 3445M-15 3/8 Sq. Dr. Universal Socket 15mm 12 point Length 53.5mm

SKU: KK-3445M-15
MPN: 3445M-15

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Ko-ken 3445M-16 3/8 Sq. Dr. Universal Socket 16mm 12 point Length 53.5mm

Ko-ken 3445M-16 3/8 Sq. Dr. Universal Socket 16mm 12 point Length 53.5mm

SKU: KK-3445M-16
MPN: 3445M-16

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Ko-ken 3445M-17 3/8 Sq. Dr. Universal Socket 17mm 12 point Length 54.5mm

Ko-ken 3445M-17 3/8 Sq. Dr. Universal Socket 17mm 12 point Length 54.5mm

SKU: KK-3445M-17
MPN: 3445M-17

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Ko-ken 3445M-18 3/8 Sq. Dr. Universal Socket 18mm 12 point Length 54.5mm

Ko-ken 3445M-18 3/8 Sq. Dr. Universal Socket 18mm 12 point Length 54.5mm

SKU: KK-3445M-18
MPN: 3445M-18

Save $6.96
Ko-ken 3445M-19 3/8 Sq. Dr. Universal Socket 19mm 12 point Length 56.5mm

Ko-ken 3445M-19 3/8 Sq. Dr. Universal Socket 19mm 12 point Length 56.5mm

SKU: KK-3445M-19
MPN: 3445M-19

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Ko-ken 3445M-21 3/8 Sq. Dr. Universal Socket 21mm 12 point Length 56.5mm

Ko-ken 3445M-21 3/8 Sq. Dr. Universal Socket 21mm 12 point Length 56.5mm

SKU: KK-3445M-21
MPN: 3445M-21

Save $8.05
Ko-ken 3445M-8 3/8 Sq. Dr. Universal Socket 8mm 12 point Length 47mm

Ko-ken 3445M-8 3/8 Sq. Dr. Universal Socket 8mm 12 point Length 47mm

SKU: KK-3445M-8
MPN: 3445M-8

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Ko-ken 3445M-9 3/8 Sq. Dr. Universal Socket 9mm 12 point Length 47.5mm

Ko-ken 3445M-9 3/8 Sq. Dr. Universal Socket 9mm 12 point Length 47.5mm

SKU: KK-3445M-9
MPN: 3445M-9

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Ko-ken 3445W-1/2 3/8 Sq. Dr. Universal Socket Whitworth 1/2 12 point Length 58.5mm

Ko-ken 3445W-1/2 3/8 Sq. Dr. Universal Socket Whitworth 1/2 12 point Length 58.5mm

SKU: KK-3445W-1/2
MPN: 3445W-1/2

Save $11.43
Ko-ken 3445W-1/4 3/8 Sq. Dr. Universal Socket Whitworth 1/4 12 point Length 51mm

Ko-ken 3445W-1/4 3/8 Sq. Dr. Universal Socket Whitworth 1/4 12 point Length 51mm

SKU: KK-3445W-1/4
MPN: 3445W-1/4

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Ko-ken 3445W-1/8 3/8 Sq. Dr. Universal Socket Whitworth 1/8 12 point Length 47.5mm

Ko-ken 3445W-1/8 3/8 Sq. Dr. Universal Socket Whitworth 1/8 12 point Length 47.5mm

SKU: KK-3445W-1/8
MPN: 3445W-1/8

Save $8.39
Ko-ken 3445W-3/16 3/8 Sq. Dr. Universal Socket Whitworth 3/16 12 point Length 49.5mm

Ko-ken 3445W-3/16 3/8 Sq. Dr. Universal Socket Whitworth 3/16 12 point Length 49.5mm

SKU: KK-3445W-3/16
MPN: 3445W-3/16

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Ko-ken 3445W-3/8 3/8 Sq. Dr. Universal Socket Whitworth 3/8 12 point Length 54.5mm

Ko-ken 3445W-3/8 3/8 Sq. Dr. Universal Socket Whitworth 3/8 12 point Length 54.5mm

SKU: KK-3445W-3/8
MPN: 3445W-3/8

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Ko-ken 3445W-5/16 3/8 Sq. Dr. Universal Socket Whitworth 5/16 12 point Length 53.5mm

Ko-ken 3445W-5/16 3/8 Sq. Dr. Universal Socket Whitworth 5/16 12 point Length 53.5mm

SKU: KK-3445W-5/16
MPN: 3445W-5/16

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Ko-ken 3445W-7/16 3/8 Sq. Dr. Universal Socket Whitworth 7/16 12 point Length 57.5mm

Ko-ken 3445W-7/16 3/8 Sq. Dr. Universal Socket Whitworth 7/16 12 point Length 57.5mm

SKU: KK-3445W-7/16
MPN: 3445W-7/16

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Ko-ken 4300S-16 1/2 Sq. Dr. Spark Plug Socket 16mm 6 point Length 70mm Rubber

Ko-ken 4300S-16 1/2 Sq. Dr. Spark Plug Socket 16mm 6 point Length 70mm Rubber

SKU: KK-4300S-16
MPN: 4300S-16

Save $3.91
Ko-ken 4300S-18 1/2 Sq. Dr. Spark Plug Socket 18mm 6 point Length 70mm Rubber

Ko-ken 4300S-18 1/2 Sq. Dr. Spark Plug Socket 18mm 6 point Length 70mm Rubber

SKU: KK-4300S-18
MPN: 4300S-18

Save $4.13
Ko-ken 4300S-20.8 1/2 Sq. Dr. Spark Plug Socket 20.8mm 6 point Length 70mm Rubber

Ko-ken 4300S-20.8 1/2 Sq. Dr. Spark Plug Socket 20.8mm 6 point Length 70mm Rubber

SKU: KK-4300S-20.8
MPN: 4300S-20.8

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Ko-ken 4305A-1 1/2 Sq. Dr. Socket 1 12 point Length 77mm

Ko-ken 4305A-1 1/2 Sq. Dr. Socket 1 12 point Length 77mm

SKU: KK-4305A-1
MPN: 4305A-1

Save $5.57