L-key, angular, for socket head screws. 6-fold, 4x mm Wera

Design: made of stainless steel, flexible-hard (54 HRC) thanks to vacuum quenching in ice .With Hex-Plus geometry.This reduces the notch effect and thus prevents damage to the screw head, while increasing the static torque by 20%.The spherical head allows the connections to be twisted also in an oblique position.

Application: special product, prevents the formation of rust when machining stainless steel screws.