产品描述：
1/2" Square Drive Screwdriver Bits
Used most often in the automotive and aerospace industries. The weight to strength ratio ensures the reliability and accessibility that is so important in this type of production environment. For insertion and removal of fasteners and fixings using 1/2" square drive tooling. Manufactured from chrome vanadium steel and are fully chrome plated with a mirror finish and aluminium free to ensure non sparking. All have ball retaining groove on each face of the square drive. Conforms to DIN standards. Bit length: 20mm.
Overall length: 55mm.
except * 65mm or 70mm.
Hexagon