NEEWER Photography Single Roller Wall Mounting Manual Background Support System with 2 x Single Hook 2 x Expand Bar 1 x Chain NEEWER Photography Single Roller Wall Mounting Manual Background Support System with 2 x Single Hook, 2 x Expand Bar, 1 x Chain, Load Capacity: 22lb/10kg Perfect for paper backdrop support system.The included chain is used to raise and lower the paper easily and smoothly and also helps to protect the background from kinking. Substitute of high priced electrical roller system.Takes up a small amount of space when the background is rolled up. Durability & light weight, easy to use.Adjustable friction control to prevent paper roll out. Gear designed roller ensures effortless raising and lowering backgrounds. Counter-balanced chain and gear assembly makes raising and lowering your backgrounds quick and easy.Note:The Background is NOT included. Neewer Photography Single Roller Wall Mounting Manual Background Support System- Chain Driven Backdrop Elevation System This is a great unit for your permanent studio set-ups. It can be attached directly into your wall/ceiling, allowing you to set-up your personal studio with ease. Installation Tips - It depends on what type of backdrop you'll use: (1) For Paper Backdrop Roll with Center Rod - Directly slot the paper backdrop into the expansion rod; (2)For Muslin or Canvas Backdrop Without Center Rod - You'll need to get a center rod (e.g. 2 inches PVC pipe) and attach it to the expansion rod and roll the backdrop onto the pipe. (**You can use water PVC pipe available in hardware shops, and cut it to any length to ensure the tube is longer than the width of the backdrop.**) Package Contents: 2 x Single hooks; 2 x Expand bars; 1 x Chains; 4 x Clamp screws The brackets are heavy duty, so they are able to hold heavy backgrounds/backdrops with ease. The counter-balanced chain and gear assembly makes raising and lowering your backgrounds quick and easy. _x000D_