The vinyl coating prevents mugs from swinging and sliding. Easy to install with a sharp steel screw. Ideal for hanging lightweight items on the wall or ceiling. Contents: 80 pieces and 6 sizes. Warning: Please keep them away from children under 6 years old. Material: Vinyl and steel. Color: White. Dimensions: 20 x 1/2" mug hooks, 17 x 5/8" mug hooks, 15 x 3/4" mug hooks, 10 x 7/8" mug hooks, 10 x 1" mug hooks, 8 x 1-1/4" mug hooks. The screw-in hooks are perfectly designed for outdoor and indoor use. Want more space in your kitchen cabinet? Having trouble keeping things organized in your pantry? Screw hooks can help you with all of that. They are also strong enough to hang wind chimes, lanterns, bird feeders, garden lights, Christmas lights, or other festive or holiday decorations. Drill a test hole first and explore other ways to use Kuuqa screw hooks. Warning: As this item has sharp points, keep it away from children and babies.