Koken 3/8" Drive Ratchet Handle (72 Teeth)-Stubby 100mm QR Z-Series (3725ZSB)

72 Teeth

The patented design of the 72T combines the low backlash, small size, and has a 10% higher torque limit in comparison to the 36 tooth ratchet.

Swing Arc

The legacy 36 tooth ratchets move 10°/click. The new 72 tooth ratchets move 5°/click.

Higher Torque Capacity

The finer 72 teeth design creates more surface area contact with the gear; thus, it has a 10% higher torque upper limit.

Dual Pawl

The design changes include moving from the single pawl of the 36 tooth design to the patented dual pawl of the 72 tooth design. The dual pawl 72 tooth design utilizes a single spring. We took four years of testing to perfect the low spring pressure needed to maintain Ko-ken's hallmark low-torque backlash.