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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 4300M-31 1/2 Sq. Dr. Socket 31mm 6 point Length 77mm

Ko-ken 4300M-31 1/2 Sq. Dr. Socket 31mm 6 point Length 77mm

SKU: KK-4300M-31
MPN: 4300M-31

Save $6.48
Ko-ken 4300M-32 1/2 Sq. Dr. Socket 32mm 6 point Length 77mm

Ko-ken 4300M-32 1/2 Sq. Dr. Socket 32mm 6 point Length 77mm

SKU: KK-4300M-32
MPN: 4300M-32

Save $6.48
Ko-ken 4300M-33 1/2 Sq. Dr. Socket 33mm 6 point Length 77mm

Ko-ken 4300M-33 1/2 Sq. Dr. Socket 33mm 6 point Length 77mm

SKU: KK-4300M-33
MPN: 4300M-33

Save $10.01
Ko-ken 4300M-34 1/2 Sq. Dr. Socket 34mm 6 point Length 77mm

Ko-ken 4300M-34 1/2 Sq. Dr. Socket 34mm 6 point Length 77mm

SKU: KK-4300M-34
MPN: 4300M-34

Save $10.01
Ko-ken 4300M-35 1/2 Sq. Dr. Socket 35mm 6 point Length 77mm

Ko-ken 4300M-35 1/2 Sq. Dr. Socket 35mm 6 point Length 77mm

SKU: KK-4300M-35
MPN: 4300M-35

Save $10.01
Ko-ken 4300M-36 1/2 Sq. Dr. Socket 36mm 6 point Length 77mm

Ko-ken 4300M-36 1/2 Sq. Dr. Socket 36mm 6 point Length 77mm

SKU: KK-4300M-36
MPN: 4300M-36

Save $10.19
Ko-ken 4300M-37 1/2 Sq. Dr. Socket 37mm 6 point Length 77mm

Ko-ken 4300M-37 1/2 Sq. Dr. Socket 37mm 6 point Length 77mm

SKU: KK-4300M-37
MPN: 4300M-37

Save $10.91
Ko-ken 4300M-38 1/2 Sq. Dr. Socket 38mm 6 point Length 77mm

Ko-ken 4300M-38 1/2 Sq. Dr. Socket 38mm 6 point Length 77mm

SKU: KK-4300M-38
MPN: 4300M-38

Save $11.74
Ko-ken 4300M-8 1/2 Sq. Dr. Socket 8mm 6 point Length 77mm

Ko-ken 4300M-8 1/2 Sq. Dr. Socket 8mm 6 point Length 77mm

SKU: KK-4300M-8
MPN: 4300M-8

Save $3.40
Ko-ken 4300M-8(L120) 1/2 Sq. Dr. Socket 8mm 6 point Length 120mm

Ko-ken 4300M-8(L120) 1/2 Sq. Dr. Socket 8mm 6 point Length 120mm

SKU: KK-4300M-8(L120)
MPN: 4300M-8(L120)

Save $10.31
Ko-ken 4300M-9 1/2 Sq. Dr. Socket 9mm 6 point Length 77mm

Ko-ken 4300M-9 1/2 Sq. Dr. Socket 9mm 6 point Length 77mm

SKU: KK-4300M-9
MPN: 4300M-9

Save $3.40
Ko-ken 4400A-1 1/2 Sq. Dr. Socket 1 6 point Length 42mm

Ko-ken 4400A-1 1/2 Sq. Dr. Socket 1 6 point Length 42mm

SKU: KK-4400A-1
MPN: 4400A-1

Save $2.92
Ko-ken 4400A-1.1/16 1/2 Sq. Dr. Socket 1.1/16 6 point Length 43mm

Ko-ken 4400A-1.1/16 1/2 Sq. Dr. Socket 1.1/16 6 point Length 43mm

SKU: KK-4400A-1.1/16
MPN: 4400A-1.1/16

Save $2.92
Ko-ken 4400A-1.1/2 1/2 Sq. Dr. Socket 1.1/2 6 point Length 47mm

Ko-ken 4400A-1.1/2 1/2 Sq. Dr. Socket 1.1/2 6 point Length 47mm

SKU: KK-4400A-1.1/2
MPN: 4400A-1.1/2

Save $8.43
Ko-ken 4400A-1.1/4 1/2 Sq. Dr. Socket 1.1/4 6 point Length 46mm

Ko-ken 4400A-1.1/4 1/2 Sq. Dr. Socket 1.1/4 6 point Length 46mm

SKU: KK-4400A-1.1/4
MPN: 4400A-1.1/4

Save $3.96
Ko-ken 4400A-1.1/8 1/2 Sq. Dr. Socket 1.1/8 6 point Length 43mm

Ko-ken 4400A-1.1/8 1/2 Sq. Dr. Socket 1.1/8 6 point Length 43mm

SKU: KK-4400A-1.1/8
MPN: 4400A-1.1/8

Save $3.37
Ko-ken 4400A-1.3/16 1/2 Sq. Dr. Socket 1.3/16 6 point Length 46mm

Ko-ken 4400A-1.3/16 1/2 Sq. Dr. Socket 1.3/16 6 point Length 46mm

SKU: KK-4400A-1.3/16
MPN: 4400A-1.3/16

Save $3.50
Ko-ken 4400A-1.3/8 1/2 Sq. Dr. Socket 1.3/8 6 point Length 47mm

Ko-ken 4400A-1.3/8 1/2 Sq. Dr. Socket 1.3/8 6 point Length 47mm

SKU: KK-4400A-1.3/8
MPN: 4400A-1.3/8

Save $5.65
Ko-ken 4400A-1.5/16 1/2 Sq. Dr. Socket 1.5/16 6 point Length 47mm

Ko-ken 4400A-1.5/16 1/2 Sq. Dr. Socket 1.5/16 6 point Length 47mm

SKU: KK-4400A-1.5/16
MPN: 4400A-1.5/16

Save $5.65
Ko-ken 4400A-1.7/16 1/2 Sq. Dr. Socket 1.7/16 6 point Length 47mm

Ko-ken 4400A-1.7/16 1/2 Sq. Dr. Socket 1.7/16 6 point Length 47mm

SKU: KK-4400A-1.7/16
MPN: 4400A-1.7/16

Save $8.43
Ko-ken 4400A-1/2 1/2 Sq. Dr. Socket 1/2 6 point Length 37mm

Ko-ken 4400A-1/2 1/2 Sq. Dr. Socket 1/2 6 point Length 37mm

SKU: KK-4400A-1/2
MPN: 4400A-1/2

Save $1.53
Ko-ken 4400A-1/4 1/2 Sq. Dr. Socket 1/4 6 point Length 36mm

Ko-ken 4400A-1/4 1/2 Sq. Dr. Socket 1/4 6 point Length 36mm

SKU: KK-4400A-1/4
MPN: 4400A-1/4

Save $1.53
Ko-ken 4400A-11/16 1/2 Sq. Dr. Socket 11/16 6 point Length 37mm

Ko-ken 4400A-11/16 1/2 Sq. Dr. Socket 11/16 6 point Length 37mm

SKU: KK-4400A-11/16
MPN: 4400A-11/16

Save $1.73
Ko-ken 4400A-13/16 1/2 Sq. Dr. Socket 13/16 6 point Length 38mm

Ko-ken 4400A-13/16 1/2 Sq. Dr. Socket 13/16 6 point Length 38mm

SKU: KK-4400A-13/16
MPN: 4400A-13/16

Save $2.08