The Stanley Smoothing Bench Plane features a cast iron base with precision ground sides and bottom for excellent durability. The base also has a coating to prevent corrosion and extend the life of the tool. The cutter is constructed of hardened, tempered high-carbon chrome steel. The knob and handle are contoured and made of polished high-impact plastic. The depth adjustment knob and lateral alignment lever give excellent control to the user. The cap iron makes the blade more rigid and curls and breaks apart wood shavings as they pass through. Cutter blade included.