IDEAL Iron conduit bender head has ductile iron construction for exceptional durability and rugged construction that withstands a lifetime of heavy use. Bends conduit pipes to fit around any corner, ceiling, wall or irregularly shaped passageways. It features precision marks locating degree scale, star, arrow and rim notch for perfect bends every time. Bender head has easy visibility markings that are raised and cast into both sides. It has a deeply serrated steps and grooved internal hook surface that prevents slippage, while applying high leverage. It is heat treated for extra strength and reinforced at stress points for longer life. Uses the Benfield bending system, which is standard to the industry, resulting in accurate and dependable bends. Includes convenient bending guide as a reference for basic bends.