- Solution to the extraneous rust problem: fasten stainless screws with stainless tools
- Vacuum ice-hardened
- Suitable for square head socket screws
- 1/4 hexagon drive (Wera connecting series 4)
Application:Square socket screws
Drive:1/4 hexagon. suitable for DIN ISO 1173-F 6.3 bit holders
Design:Stainless steel for minimising rust
Includes:
- 3868/4 Square-Plus bits. stainless. # 1 x 89 mm
