Pixnor 10pcs 2 Inch Universal Photo Studio Canvas Muslin Paper Backdrop Clamps Clips (Black) Color: mainly black. Material: durable hard plastic. Maximum jaw opening: 13mm; Length: about 2-inch /50mm. Heavy duty muslin clamp with firm grip. Used for clipping paper, canvas and muslin backdrops to a crossbar. Toothed area below jaw ends can be used to hold round objects, and pivoting jaws hold irregular items Specially designed handle provides comfortable grip