Phenolic Handle Knobs Material:Plastics,Polyamide Color:Black,red,champagne and ... Star Phenolic Handle Knobs Technical Drawings: A:Product specifications1.Handle Material:Bakelite(polyamide),Phenolics, plastics, zinc alloy, aluminum2.Handle screw size:M5, ... M6, M8, M10,M123.Handle Diameter:25mm, 32mm, 40mm, 50mm, 63mm4 ...