... 2008 Detailed Information:Material: Brass, Bronze, Carton steel(low/medium/high carbon steel) Stainless steel, Aluminum alloy,Surface Treatment: Chrome ... patchCategory: 1. by components Bolts, Screw bolts/Studs, Nuts, Tapping screws, Wooden screws, Washers/Gaskets, Check rings, Pins, Rivets and etc. 2 ... price, prompt delivery and good service.www.jielimetal.com.cn High Precision Screws JL-SCR-099