Sufficient Quantity: you will receive 200 pieces of plaster washers, plenty of them for your daily use and replacement needs, and you can also share them with your friends and familyConcave and Convex Design: washers for screws measure about 1 inch outside diameter with a 5/32 inch center hole, plus they have a concave and convex design for easier installation; Please confirm the size before purchasingRustproof and Wear Resistant: plaster ceiling washers are made of zinc plated metal material, which is waterproof, rustproof, strong and wear resistant, not easy to be broken, and well made, can be applied for a long timeSave Your Effort: plaster repair rings are easy to install, you can pre drill holes where they need to be fixed, then screw the washer and fix the washer into the board behind the plaster, it won't take too much time and effortPractical Tools: zinc plated washers have a wide range of applications, they can be utilized to hold plaster to the plank, avoid cracking of the plank, and keep walls and ceilings in good condition Features: Quality material: Made of quality material, the plaster buttons are sturdy and firm, not easy to get rust, can nicely fix the plaster against the lath, serving you for a long period of time. Rich quantity: The profile washers are rich in amount, which can satisfy your a large area of repairing, also can be kept as spare. Specifications: Material: zinc plated metal Color: silver Size: 1 inch in outside diameter, 5/32 inch in center hole Package includes: 200 x Plaster washers Notes: Manual measurement, please allow slight errors on size. The color may exist slight difference due to different screen displays. Small sized items, please keep away from kids.