... 4.Fast delivery and low price Features:cnc turning stainless steel screw with blue lock patch1.Material:Standard brass, silicon ... zinc, Dacromet, Geomet, burnishing, wet-varnishing, Delta Tone, KTL coated, chrome, hard chrome, copper-plating, gold-plating, phosphating, pearl lustre ... . Production picture reference: Production equipment reference: cnc turning stainless steel screw with blue lock patch