Self-aligning pads adjustable, with o-ring, exchangeable Body carbon steel.Ball rust and acid resistant steel. Inserts: Form C, F, M tool steel Form K POM Form E stainless steel. Form O stainless steel diamond impregnated. Form P stainless steel with polyurethane surface.Body tempered, black oxidised.Ball hardened, bright.
Inserts:Form C, F hardened, black oxidised.
Form M with carbide serrations, black oxidised.Form K white.Form E hardened, bright.Form O diamond impregnated surface comparable to 100 grade abrasive grit.Form P polyurethane surface, hardness 60 Shore.