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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 3300FN-10 3/8 Sq. Dr. Socket 10mm Flare Nut Length 53mm

Ko-ken 3300FN-10 3/8 Sq. Dr. Socket 10mm Flare Nut Length 53mm

SKU: KK-3300FN-10
MPN: 3300FN-10

Save $11.01
Ko-ken 3300FN-11 3/8 Sq. Dr. Socket 11mm Flare Nut Length 53mm

Ko-ken 3300FN-11 3/8 Sq. Dr. Socket 11mm Flare Nut Length 53mm

SKU: KK-3300FN-11
MPN: 3300FN-11

Save $11.01
Ko-ken 3300FN-13 3/8 Sq. Dr. Socket 13mm Flare Nut Length 62mm

Ko-ken 3300FN-13 3/8 Sq. Dr. Socket 13mm Flare Nut Length 62mm

SKU: KK-3300FN-13
MPN: 3300FN-13

Save $11.33
Ko-ken 3300FN-14 3/8 Sq. Dr. Socket 14mm Flare Nut Length 62mm

Ko-ken 3300FN-14 3/8 Sq. Dr. Socket 14mm Flare Nut Length 62mm

SKU: KK-3300FN-14
MPN: 3300FN-14

Save $11.54
Ko-ken 3300FN-15 3/8 Sq. Dr. Socket 15mm Flare Nut Length 70mm

Ko-ken 3300FN-15 3/8 Sq. Dr. Socket 15mm Flare Nut Length 70mm

SKU: KK-3300FN-15
MPN: 3300FN-15

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Ko-ken 3300FN-16 3/8 Sq. Dr. Socket 16mm Flare Nut Length 70mm

Ko-ken 3300FN-16 3/8 Sq. Dr. Socket 16mm Flare Nut Length 70mm

SKU: KK-3300FN-16
MPN: 3300FN-16

Save $11.85
Ko-ken 3300FN-17 3/8 Sq. Dr. Socket 17mm Flare Nut Length 80mm

Ko-ken 3300FN-17 3/8 Sq. Dr. Socket 17mm Flare Nut Length 80mm

SKU: KK-3300FN-17
MPN: 3300FN-17

Save $11.85
Ko-ken 3300FN-18 3/8 Sq. Dr. Socket 18mm Flare Nut Length 80mm

Ko-ken 3300FN-18 3/8 Sq. Dr. Socket 18mm Flare Nut Length 80mm

SKU: KK-3300FN-18
MPN: 3300FN-18

Save $12.58
Ko-ken 3300FN-19 3/8 Sq. Dr. Socket 19mm Flare Nut Length 80mm

Ko-ken 3300FN-19 3/8 Sq. Dr. Socket 19mm Flare Nut Length 80mm

SKU: KK-3300FN-19
MPN: 3300FN-19

Save $12.58
Ko-ken 3300FN-22 3/8 Sq. Dr. Socket 22mm Flare Nut Length 80mm

Ko-ken 3300FN-22 3/8 Sq. Dr. Socket 22mm Flare Nut Length 80mm

SKU: KK-3300FN-22
MPN: 3300FN-22

Save $15.21
Ko-ken 3300FN-24 3/8 Sq. Dr. Socket 24mm Flare Nut Length 80mm

Ko-ken 3300FN-24 3/8 Sq. Dr. Socket 24mm Flare Nut Length 80mm

SKU: KK-3300FN-24
MPN: 3300FN-24

Save $15.74
Ko-ken 3300FN-8 3/8 Sq. Dr. Socket 8mm Flare Nut Length 53mm

Ko-ken 3300FN-8 3/8 Sq. Dr. Socket 8mm Flare Nut Length 53mm

SKU: KK-3300FN-8
MPN: 3300FN-8

Save $11.01
Ko-ken 3300FN-9 3/8 Sq. Dr. Socket 9mm Flare Nut Length 53mm

Ko-ken 3300FN-9 3/8 Sq. Dr. Socket 9mm Flare Nut Length 53mm

SKU: KK-3300FN-9
MPN: 3300FN-9

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Ko-ken RS3300FN/6 3/8 Sq. Dr. Socket set 8mm-19mm Flare Nut 150mm 6 pieces

Ko-ken RS3300FN/6 3/8 Sq. Dr. Socket set 8mm-19mm Flare Nut 150mm 6 pieces

SKU: KK-RS3300FN/6
MPN: RS3300FN/6

Save $69.03