Koken 3725ZB-280 3/8" Drive 72-Tooth Quick Release Ratchet Handle, 280mm Z-Series

The Koken 3725ZB-280 is a 3/8" square drive ratchet handle from the Ko-ken Z-Series. It is a standard-length, fixed-head ratchet with a quick-release push button locking mechanism and a 280mm overall length.

Key Features:

• 3/8" square drive
• 72-tooth ratchet mechanism
• Overall length of 280mm
• Push button quick release
• Fixed head, Z-Series design
• Patented 72-tooth design with dual pawls
• Low backlash and compact head size, which are hallmarks of Ko-ken tools

Ko-ken reports four years of extensive testing to balance low spring pressure with low-torque backlash. The finer 72-tooth design increases surface contact with the gear and, according to Ko-ken, gives a 10% higher torque upper limit.