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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 3400M-21 3/8 Sq. Dr. Socket 21mm 6 point Length 32mm

Ko-ken 3400M-21 3/8 Sq. Dr. Socket 21mm 6 point Length 32mm

SKU: KK-3400M-21
MPN: 3400M-21

Save $1.86
Ko-ken 3400M-22 3/8 Sq. Dr. Socket 22mm 6 point Length 32mm

Ko-ken 3400M-22 3/8 Sq. Dr. Socket 22mm 6 point Length 32mm

SKU: KK-3400M-22
MPN: 3400M-22

Save $1.94
Ko-ken 3400M-23 3/8 Sq. Dr. Socket 23mm 6 point Length 33mm

Ko-ken 3400M-23 3/8 Sq. Dr. Socket 23mm 6 point Length 33mm

SKU: KK-3400M-23
MPN: 3400M-23

Save $2.05
Ko-ken 3400M-24 3/8 Sq. Dr. Socket 24mm 6 point Length 34mm

Ko-ken 3400M-24 3/8 Sq. Dr. Socket 24mm 6 point Length 34mm

SKU: KK-3400M-24
MPN: 3400M-24

Save $2.05
Ko-ken 3400M-25 3/8 Sq. Dr. Socket 25mm 6 point Length 34mm

Ko-ken 3400M-25 3/8 Sq. Dr. Socket 25mm 6 point Length 34mm

SKU: KK-3400M-25
MPN: 3400M-25

Save $2.79
Ko-ken 3400M-26 3/8 Sq. Dr. Socket 26mm 6 point Length 35mm

Ko-ken 3400M-26 3/8 Sq. Dr. Socket 26mm 6 point Length 35mm

SKU: KK-3400M-26
MPN: 3400M-26

Save $2.79
Ko-ken 3400M-5 3/8 Sq. Dr. Socket 5mm 6 point Length 26mm

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

SKU: KK-3400M-5
MPN: 3400M-5

Save $1.09
Ko-ken 3400M-5.5 3/8 Sq. Dr. Socket 5.5mm 6 point Length 26mm

Ko-ken 3400M-5.5 3/8 Sq. Dr. Socket 5.5mm 6 point Length 26mm

SKU: KK-3400M-5.5
MPN: 3400M-5.5

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

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

SKU: KK-3400M-6
MPN: 3400M-6

Save $1.09
Ko-ken 3400M-7 3/8 Sq. Dr. Socket 7mm 6 point Length 26mm

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

SKU: KK-3400M-7
MPN: 3400M-7

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

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

SKU: KK-3400M-8
MPN: 3400M-8

Save $1.09
Ko-ken 3400M-9 3/8 Sq. Dr. Socket 9mm 6 point Length 26mm

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

SKU: KK-3400M-9
MPN: 3400M-9

Save $1.09
Ko-ken 3400M.24-27 3/8 Sq. Dr. Socket 27mm 6 point Length 24mm

Ko-ken 3400M.24-27 3/8 Sq. Dr. Socket 27mm 6 point Length 24mm

SKU: KK-3400M.24-27
MPN: 3400M.24-27

Save $7.45
Ko-ken 3400M.24-30 3/8 Sq. Dr. Socket 30mm 6 point Length 24mm

Ko-ken 3400M.24-30 3/8 Sq. Dr. Socket 30mm 6 point Length 24mm

SKU: KK-3400M.24-30
MPN: 3400M.24-30

Save $7.95
Ko-ken 3400M.24-32 3/8 Sq. Dr. Socket 32mm 6 point Length 24mm

Ko-ken 3400M.24-32 3/8 Sq. Dr. Socket 32mm 6 point Length 24mm

SKU: KK-3400M.24-32
MPN: 3400M.24-32

Save $8.46
Ko-ken 3400M.24-36 3/8 Sq. Dr. Socket 36mm 6 point Length 24mm

Ko-ken 3400M.24-36 3/8 Sq. Dr. Socket 36mm 6 point Length 24mm

SKU: KK-3400M.24-36
MPN: 3400M.24-36

Save $9.99
Ko-ken 3400W-1/2 3/8 Sq. Dr. Socket Whitworth 1/2 6 point Length 33mm

Ko-ken 3400W-1/2 3/8 Sq. Dr. Socket Whitworth 1/2 6 point Length 33mm

SKU: KK-3400W-1/2
MPN: 3400W-1/2

Save $2.66
Ko-ken 3400W-1/4 3/8 Sq. Dr. Socket Whitworth 1/4 6 point Length 26mm

Ko-ken 3400W-1/4 3/8 Sq. Dr. Socket Whitworth 1/4 6 point Length 26mm

SKU: KK-3400W-1/4
MPN: 3400W-1/4

Save $1.72
Ko-ken 3400W-1/8 3/8 Sq. Dr. Socket Whitworth 1/8 6 point Length 26mm

Ko-ken 3400W-1/8 3/8 Sq. Dr. Socket Whitworth 1/8 6 point Length 26mm

SKU: KK-3400W-1/8
MPN: 3400W-1/8

Save $1.41
Ko-ken 3400W-3/16 3/8 Sq. Dr. Socket Whitworth 3/16 6 point Length 26mm

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

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

Save $1.41
Ko-ken 3400W-3/8 3/8 Sq. Dr. Socket Whitworth 3/8 6 point Length 30mm

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

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

Save $1.96
Ko-ken 3400W-5/16 3/8 Sq. Dr. Socket Whitworth 5/16 6 point Length 28mm

Ko-ken 3400W-5/16 3/8 Sq. Dr. Socket Whitworth 5/16 6 point Length 28mm

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

Save $1.90
Ko-ken 3400W-7/16 3/8 Sq. Dr. Socket Whitworth 7/16 6 point Length 32mm

Ko-ken 3400W-7/16 3/8 Sq. Dr. Socket Whitworth 7/16 6 point Length 32mm

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

Save $2.41
Ko-ken 3400W-9/16 3/8 Sq. Dr. Socket Whitworth 9/16 6 point Length 35mm

Ko-ken 3400W-9/16 3/8 Sq. Dr. Socket Whitworth 9/16 6 point Length 35mm

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

Save $3.62