【A Practical Set】You get 20 pieces of tarpaulin clamps and 20 pieces of ball tensioner and 20 pieces D-ring carabiner; With elastic tensioner and carabiner to facilitate fixing and securing the tarpaulin clips for better support. 【Easy to Use】Bale tensioners, Easy to use, simply adjust the tension to Easily attach to a pole or ground stake. The carabiner is attached to the tent clip and can be reattached to another tent clip or a small hole or pole. Pool cover clamp is designed with adjustable spiral thumbscrews, and the crocodile mouth with teeth can fix the cover more stably. 【Excellent Quality】Made of high quality nylon plastic , these tarp clips are strong and durable, can withstand strong pulling force, and are not easy to come off after attaching them to tents. These elastic balls are made of high quality nylon and high quality rubber, the elastic ropes are very elastic, durable and wear resistant. 【Widely Application】Tarp clamp and tarpaulin tensioner swimming pool can be used