Blind Polygrip Bushes Blind Polygrip Bushes

Boneham Blind Serrated Bushes are hardened like the standard GS bushes, but with a blind bore. The hardened nature of the bush provides protection for the mould when flash is being drilled out carefully, maintaining vacuum integrity. These bushes retain the same features as the standard Polygrip Bushes. The serrations prevent rotational movement and the recess allows resin to lock the bush in place.