0.47inch x 1.18inch (12 x 30mm). Made of carbon steel and zinc plated processed for maximum durability. With great corrosion & oxidation resistance. Self drilling anchors,Its special split the ribbed anchors expand on two opposing sides while you tighten the screw, increasing holding power. 't break, hangs up to 66 lbs. No hole or drilling required,easy to use and do less damage to the wall. this anchors are specially designed for drywall and can help you quickly install screws on drywall.easily remove for reuse and no big hole left in the wall. Wide application, Anchor in fixing for medium weight applications on drywall, Plasterboard, wallboard, sheet rock . Heavy duty Self-Drilling Anchors for hangs TV, Bike, shelf Straps, Cabinet & Decoration Fixing Curtains, Calligraphy, Wall Cabinets. Colour: gold Material: galvanized carbon steel Package Contents: 60 x Anchors 60 x Screws Only the above package content, other products are not included. Note: Light 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.