Ductile iron construction for added durability Heat-treated for extra strength reinforced at stress points for longer life Precision-located degree scale, star, arrow and rim notch for perfect bends every time Markings raised and cast into bender body on both sides for easy visibility Deeply serrated step helps prevent slippage when applying maximum leverage Grooved internal hook surface helps prevent conduit from slipping Flat hook surface provides stable starting point Lifetime replacement guarantee