... Steel Concealed Door Bolt 2: Size: 6'',8",10'' 3: Material: Stainless Steel 1. Product details1). Item: Staiblee Steel ... bending, welding, threading, grinding, milling, machining, lathe, assembling etc. 3. Finishing: Anodizing, Powder-Coating, Zinc-Plated, Chrome coated ,Nickel ... . 4. More specification pls do not hesitate to contact us,OEM & ODM Service, Buyer Label, Design service were offered ...