The dimension of standoff is D19 x H20mm (3/4" inch x 3/4") and the premium high-quality solid standoff fixings are designed for different type of signs display, indoor and outdoor signs display, shopping malls, Casinos, supermarket, shops, companies, homes 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 black anodized 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: 19x20mm 12PCS aluminum standoff and 12pcs stainless steel screws and 24pcs transparent washers (2pcs washers for 1pc standoff)., Manufacturer: KANDO