The dimension of standoff is D 1/2” x H 1/2” inch (12 x 12mm) and the premium high-quality solid standoff fixings are designed to suitable for different type of signs advertising and indoor and outdoor advertising boards glass sign | acrylic sign | acrylic plate | acrylic picture frame | photo | shopping malls | Casinos, supermarket, shops, companies, homes sign advertising boards etc… Product Quality: The KENSHIRE standoff are made in high-quality solid aluminum material which can make your sign display more robust and durable and longer life time. Surface treatment: The solid standoff fixings were made with special surface treatment Polished chrome color in high standard. Easy installation: 1. You must use a power tool to drill the holes. 2. You can insert and fix the anchors into the holes. 3. Using the screws to fix each barrel onto the wall. 4. Now, you can put and fix the cap screw to tighten the signs on the wall. Package includes: 1/2 inch x 1/2 inch 12x12mm 4PCS aluminum standoff and 4pcs stainless steel screws and 8pcs transparent washers (2pcs washers for 1pc standoff)., Manufacturer: KANDO