This item is a set of 2pcs clothesline tighteners, which are made of premium aluminium. Durable metal construction for added strength and stability. Suitable for tightening clothes lines, preventing clothesline from sagging, and regulating the elastic effect. Features - Color: As shown.- Material: Aluminium.- Size: 8 x 4 x 4cm.- Lightweight aluminum with spring and ball bearing tension for easy use.- operated tightener allows for personalized tautness of clothesline.- Can be used with fixed lines or pulley systems.- Compatible with most standard clotheslines.Warm Tip: Dear buyer, Due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!Packing list: 2 x tightener