Wera 851/21 4mm HIOS Direct Drive Phillips Bits
- Wera 05135290001, This 4mm HIOS direct drive bit from Wera has a 40 x 3mm shaft & is suitable for use with Phillips size PH1 screws. Wera 05135290001 851/21 4mm HIOS Direct Drive Phillips Bit PH1/40/3mm