Product Name: hand wheel 
 Handwheel material types: bakelite, nylon, plastic, aluminum, cast iron, specifications, bakelite, plastic, aluminum is generally 75,100,125,160,200 D, handwheel diameter models: back wave of the hand wheel, internal waves hand wheel hand wheel of corrugated six weeks, double the rate of plastic handwheel, double the rate of aluminum handwheel, solid handwheel, round rim handwheel grinder hand wheel plane handwheel hand wheel of the small corrugated, textured hand wheel, iron handwheel.