It is a Clamp Clip/Spring Clamp/Plastic Clamp/DIY Tools. Material: High Quality Plastic. Total Height: 3.9IN 10CM. Total Length: 4.7IN 12CM. Max Opening Capacity: 0.9 IN 2.2CM. Widely used for all sorts of projects such as gluing, clamping, gripping, and in DIY lighting photography, Woodworking, Photography, Photo Backdrops, Crafting Heavy Duty Nylon Construction etc.