: the standoff nail is made of stainless steel, which ensures strength and on the basis of and easy to use, rustproof, scratch-proof and -, support to use for long-lasting usage Easy to install: install the plastic expansion tube into the wall and fix the standoff screw with screw, the contact between the screw and the product is protected by rubber pad Warm notice: screws require a screwdriver to assist the mounting of the standoff nails Rang of use: the wall standoffs screws are good choice for company, office, supermarkets, store, shops, markets, bedroom, such as glass sign, acrylic sign, acrylic plate, acrylic picture frame indoor and outdoor advertising boards, photo WIDELY APPLICATION:These standoff screws are perfect for hanging hanging glass paintings or artwork , ideal choice of accessories for decorating offices, supermarkets, stores, bedrooms and more! Colour:silver Material:Stainless steel Size:12x20 (brushed) Package Contents: 40 x Advertising nails Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.