This round wall protector can protect walls from doorknob damage. Just peel and stick, it is very easy to use. With strong adhesive, it is not easy to drop. Features: Using rubber material, soft and thick. Protect the wall surface to prevent the shock and noise reduction. Can be attached to other objects' surface to avoid impacting and noise reducing. Excellent for new construction, renovation or repair. Strong adhesive, not easy to drop. Easy to use. Just peel and stick. Specifications: Quantity: 1, 4, 8, 12 (optional) Color: purple, blue, pink, white (sent at random) Package size: 100 * 80 * 20mm / 3.94 * 3.15 * 0.79in (1pcs) 150 * 100 * 30mm / 5.9 * 3.94 * 1.18in (4pcs) 200 * 150 * 50mm / 7.87 * 5.9 * 1.97in (8pcs) 250 * 200 * 50mm / 9.84 * 7.87 * 1.97in (12pcs) Package weight: 9g / 0.32ounces (1pcs) 33g / 1.16ounces (4pcs) 65g / 2.29ounces (8pcs) 98g / 3.46ounces (12pcs) Note: The color of the product will be sent at random. Please understand, thanks.