Socket key head 1/2 "1000V SW21x40mm w / internal 6-edge

- from chrome vanadium steel
- Length: approx. 55 mm
- forged
- with 1/2"-Square Drive
- oil-hardened
- with inside grooves to accept the fixing devices at the operation Tools
- hexagon in accordance with DIN 7448    
- Square drive as DIN 3120 / ISO 1174 with ball retaining groove
- According to the latest Norm VDE / EN 60900:2012 / IEC 60900:2012