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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 3400A-13/32 3/8 Sq. Dr. Socket 13/32 6 point Length 26mm

Ko-ken 3400A-13/32 3/8 Sq. Dr. Socket 13/32 6 point Length 26mm

SKU: KK-3400A-13/32
MPN: 3400A-13/32

Save $1.20
Ko-ken 3400A-15/16 3/8 Sq. Dr. Socket 15/16 6 point Length 34mm

Ko-ken 3400A-15/16 3/8 Sq. Dr. Socket 15/16 6 point Length 34mm

SKU: KK-3400A-15/16
MPN: 3400A-15/16

Save $2.25
Ko-ken 3400A-19/32 3/8 Sq. Dr. Socket 19/32 6 point Length 28mm

Ko-ken 3400A-19/32 3/8 Sq. Dr. Socket 19/32 6 point Length 28mm

SKU: KK-3400A-19/32
MPN: 3400A-19/32

Save $1.61
Ko-ken 3400A-25/32 3/8 Sq. Dr. Socket 25/32 6 point Length 31mm

Ko-ken 3400A-25/32 3/8 Sq. Dr. Socket 25/32 6 point Length 31mm

SKU: KK-3400A-25/32
MPN: 3400A-25/32

Save $2.05
Ko-ken 3400A-3/16 3/8 Sq. Dr. Socket 3/16 6 point Length 26mm

Ko-ken 3400A-3/16 3/8 Sq. Dr. Socket 3/16 6 point Length 26mm

SKU: KK-3400A-3/16
MPN: 3400A-3/16

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Ko-ken 3400A-3/4 3/8 Sq. Dr. Socket 3/4 6 point Length 30mm

Ko-ken 3400A-3/4 3/8 Sq. Dr. Socket 3/4 6 point Length 30mm

SKU: KK-3400A-3/4
MPN: 3400A-3/4

Save $1.66
Ko-ken 3400A-3/8 3/8 Sq. Dr. Socket 3/8 6 point Length 26mm

Ko-ken 3400A-3/8 3/8 Sq. Dr. Socket 3/8 6 point Length 26mm

SKU: KK-3400A-3/8
MPN: 3400A-3/8

Save $1.20
Ko-ken 3400A-5/16 3/8 Sq. Dr. Socket 5/16 6 point Length 26mm

Ko-ken 3400A-5/16 3/8 Sq. Dr. Socket 5/16 6 point Length 26mm

SKU: KK-3400A-5/16
MPN: 3400A-5/16

Save $1.20
Ko-ken 3400A-5/8 3/8 Sq. Dr. Socket 5/8 6 point Length 28mm

Ko-ken 3400A-5/8 3/8 Sq. Dr. Socket 5/8 6 point Length 28mm

SKU: KK-3400A-5/8
MPN: 3400A-5/8

Save $1.61
Ko-ken 3400A-7/16 3/8 Sq. Dr. Socket 7/16 6 point Length 26mm

Ko-ken 3400A-7/16 3/8 Sq. Dr. Socket 7/16 6 point Length 26mm

SKU: KK-3400A-7/16
MPN: 3400A-7/16

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Ko-ken 3400A-7/8 3/8 Sq. Dr. Socket 7/8 6 point Length 32mm

Ko-ken 3400A-7/8 3/8 Sq. Dr. Socket 7/8 6 point Length 32mm

SKU: KK-3400A-7/8
MPN: 3400A-7/8

Save $2.14
Ko-ken 3400A-9/16 3/8 Sq. Dr. Socket 9/16 6 point Length 27mm

Ko-ken 3400A-9/16 3/8 Sq. Dr. Socket 9/16 6 point Length 27mm

SKU: KK-3400A-9/16
MPN: 3400A-9/16

Save $1.50
Ko-ken 3400A-9/32 3/8 Sq. Dr. Socket 9/32 6 point Length 26mm

Ko-ken 3400A-9/32 3/8 Sq. Dr. Socket 9/32 6 point Length 26mm

SKU: KK-3400A-9/32
MPN: 3400A-9/32

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Ko-ken 3400M-10 3/8 Sq. Dr. Socket 10mm 6 point Length 26mm

Ko-ken 3400M-10 3/8 Sq. Dr. Socket 10mm 6 point Length 26mm

SKU: KK-3400M-10
MPN: 3400M-10

Save $1.09
Ko-ken 3400M-11 3/8 Sq. Dr. Socket 11mm 6 point Length 26mm

Ko-ken 3400M-11 3/8 Sq. Dr. Socket 11mm 6 point Length 26mm

SKU: KK-3400M-11
MPN: 3400M-11

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Ko-ken 3400M-12 3/8 Sq. Dr. Socket 12mm 6 point Length 26mm

Ko-ken 3400M-12 3/8 Sq. Dr. Socket 12mm 6 point Length 26mm

SKU: KK-3400M-12
MPN: 3400M-12

Save $1.09
Ko-ken 3400M-13 3/8 Sq. Dr. Socket 13mm 6 point Length 26mm

Ko-ken 3400M-13 3/8 Sq. Dr. Socket 13mm 6 point Length 26mm

SKU: KK-3400M-13
MPN: 3400M-13

Save $1.32
Ko-ken 3400M-14 3/8 Sq. Dr. Socket 14mm 6 point Length 27mm

Ko-ken 3400M-14 3/8 Sq. Dr. Socket 14mm 6 point Length 27mm

SKU: KK-3400M-14
MPN: 3400M-14

Save $1.36
Ko-ken 3400M-15 3/8 Sq. Dr. Socket 15mm 6 point Length 28mm

Ko-ken 3400M-15 3/8 Sq. Dr. Socket 15mm 6 point Length 28mm

SKU: KK-3400M-15
MPN: 3400M-15

Save $1.47
Ko-ken 3400M-16 3/8 Sq. Dr. Socket 16mm 6 point Length 28mm

Ko-ken 3400M-16 3/8 Sq. Dr. Socket 16mm 6 point Length 28mm

SKU: KK-3400M-16
MPN: 3400M-16

Save $1.47
Ko-ken 3400M-17 3/8 Sq. Dr. Socket 17mm 6 point Length 29mm

Ko-ken 3400M-17 3/8 Sq. Dr. Socket 17mm 6 point Length 29mm

SKU: KK-3400M-17
MPN: 3400M-17

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Ko-ken 3400M-18 3/8 Sq. Dr. Socket 18mm 6 point Length 30mm

Ko-ken 3400M-18 3/8 Sq. Dr. Socket 18mm 6 point Length 30mm

SKU: KK-3400M-18
MPN: 3400M-18

Save $1.51
Ko-ken 3400M-19 3/8 Sq. Dr. Socket 19mm 6 point Length 30mm

Ko-ken 3400M-19 3/8 Sq. Dr. Socket 19mm 6 point Length 30mm

SKU: KK-3400M-19
MPN: 3400M-19

Save $1.51
Ko-ken 3400M-20 3/8 Sq. Dr. Socket 20mm 6 point Length 31mm

Ko-ken 3400M-20 3/8 Sq. Dr. Socket 20mm 6 point Length 31mm

SKU: KK-3400M-20
MPN: 3400M-20

Save $1.86