Dimensions: Thread Suction cups size approx is 2.3 * 4.1cm,diameter: 40 mm. Quantity: 20 pieces of Suction cups, it is enough for you to meet your daily needs Strong and Durable: Our Suction Cups are made of high-quality silica gel and clear durable plastic, beautiful, sturdy, and waterproof. Easy to Install: Press the hook on the smooth and dry surface, squeeze the air out, without screws and drilling, Wide Application: Such as glass, metal, ceramic tile, plastic, Formica, , bedrooms, bathrooms, closets, cabinet, kitchen, office, etc. Product Description Specification Size: Diameter 40mm Color: Transparent Package includes : 20 pcs Suction Cups Feature: 1.Adhesive to the wall easily, without any damage on the wall. 2. Convenient for repeat use, just wash it then dry gently. 3. It can save space and organize your favorite things in neat.