Each standoff screw has a 2-piece rubber pad to protect your panels, the set is very convenient to use Material: the standoff nail is made of stainless steel, with sturdy construction, will not easy to break and deform, rust-proof, scratch-resistant and corrosion-resistant, which can serve you for a long time Simple to install: install the plastic expansion tube into the wall and fix the standoff screw with a screw, the gap between the screw and the product is protected by a rubber pad; Warm note: the screws require a screwdriver to help tighten the standoff nails Standoff screws: the size of the screws is approx. 19 x 25 mm / 3/4 x 1 inch in diameter x length, the screw thread length is approx. 3/4 inch (19 mm), please check the size before purchasing Wide Applications: Our wall mounting screws are suitable for homes, hotels, businesses, offices, supermarkets, shops, stores, markets, bedrooms, such as glass panels, acrylic panels, acrylic plates, indoor and outdoor acrylic