LuckIn 20-Pack Standoff Screws (1/2 in. Dia x 3/4 in. L), Stainless Steel Standoff Mounting Hardware for Acrylic Signs, Silver: Amazon.com: Industrial & Scientific
Source Stainless Steel Acrylic standoff Signs Glass Advertising Spacer espaciador de aluminio Threaded Wall Mounted Glass Standoff on m.alibaba.com