Helps Securely Tighten Background Simply attach the screen to the clips at even intervals to keep the screen tight and wrinkle free. Multi-functional - In the active position, the user can slide the muslin holder up and down the stand to their best interest. Superior Quality and (Only 1/13th the weight of the conventional muslin clamps) Attach quickly and easily to crossbars or light stands.Precise and Fast Adjustments. Suit for all types of crossbars and background supports,Consist of stretchy cords. colour: black Material: Plastic size: About Length: 20cm Package Contents: 16*Photography clip Kindly Note: Does not work for vinyl backdrops, because metal teeth will scratches them. In order to more stronger the new clips are painted closed and might take a little extra squeeze to break that bond for the fist time but not an issue for the next time and they will work well to the backdrop. Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.