1.Name:Back Corrugated Handwheel 2.Certificated:ISO9001:2000 3.Material:Cast Iron,Plastic,Bakelite 4. ... Name:Back Corrugated Handwheel(1)Material: Cast Iron,Plastic,Bakelite(2) Type: Bakelite Handwheel,Double Spoked Handwheel,Inner Corrugation Handwheel,Back ...