Bits with tiny diamond particles on the bit tip. This ensures a secure fit in the screw head, reduces the contact pressure required and lowers the risk of slipping. BiTorsion bits with an elastic torsion zone - where kinetic energy is diverted from p...

Brass Compression Pump valve (Dia)22mm.This sand blasted brass 22mm diameter pump valve is ideal for keeping your central heating running smoothly. It has a durable design that is easy to install.