The Proto J1200FBASD combination wrench set features Anti-Slip Design (ASD) technology with a locking groove that prevents slippage and reduces knuckle injury, while the unique arc design increases surface contact by 400% for greater torque transfer with fewer rounded fastener edges. Constructed from forged alloy steel with a durable black oxide finish, each wrench has an off-set handle and 12-point box end for versatile open and box-end use.
This 14-piece set covers sizes from 3/8" to 1-1/8" (3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1, 1-1/16, 1-1/8) and includes a convenient tool roll for organized storage and portability — ideal for professional mechanics, MRO, and industrial maintenance applications.