1.Material: stainless steel 316 or stainless steel 304 2.Surface finish: brushed/satin or polished/mirror 3.Manufacturing methods: precision investment casting 4.Feature: Available in Dia: (16; 19; 22; 25; 32; 38 & 50mm) 5.Application: Glass door/wood door/frame door/steel door. Packing: One pair with a box, ten pairs packed in a carton.