brass spring washer: 1)Material:metal,brass,stainless steel 2)Color:zinc plated, plain 3)Size:up to client's requirement zinc plated flat washer:1)Material:carbon steel,stainless steel2)Color:zinc plated(yellow,black,blue,white,etc),plain3)Size:it's up to client's requirements4)Packing:bag+carton+pallet or box+carton+pallet5)MOQ:500000 pcsHere are for more additional informations:Production Line: ...