1. Package includes: Our products come with 2 tensioners. The mounting accessories allow installation in various locations with different ropes. The ropes can be retracted or released anytime to protect areas like swimming pools from rain, snow, or debris. 2. quality material: Our tensioners are crafted from aluminum alloy. The surface is smooth and burr, with corrosionresistant, rustproof properties, ensuring minimal deformation. Sturdy and durable, they are suitable for all rainy and snowy conditions. 3. Convenient installation: Simply thread the rope (not included) through the eyelet on the pool cover into the winch, and you can easily secure the rope to the cover. The button design enhances userfriendliness. 4. Improved structure: The ratchet for winter pool covers differs from standard market designs. Its rectangular structure, combined with the winch for cable tightening, makes attaching the cover to aboveground pools quicker and more efficient.