Manufactured and tested generally in accordance with DIN3122 and ISO3315 Specifications
Designed for use in conjunction with any 1/4″ hexagon drive unit, i.e. hand, electric or air screwdrivers, to drive 1/4″ and 3/8″ square drive sockets. Manufactured from chrome vanadium steel hardened, tempered and chrome plated. Each square driver end incorporates a spring-loaded retaining ball for secure socket holding. Display packed.