Ductile iron construction for added durabilityHeat-treated for extra strength -- reinforced at stress points for longer lifePrecision-located degree scale, star, arrow and rim notch for perfect bends every timeMarkings raised and cast into bender body on both sides for easy visibilityDeeply serrated step helps prevent slippage when applying maximum leverageGrooved internal hook surface helps prevent conduit from slippingFlat hook surface provides stable starting pointLifetime replacement guarantee