It is made of high quality plastic material, very durable, thick and safe. Sturdy enough with a smooth surface and no burrs or damage. Can be used for a long time.It is suitable for trampoline rails. Special triangular hooks keep the safety webbing securely in place and prevent the pole from slipping off.It is very easy to install and use, the shell pole topper fits perfectly and is very easy to place, keeping the net in the woods. This is a very practical accessory. Material: ABS Package includes: 6x trampoline pole cover Note: 1. Please allow a little error due to manual measurement. Please make sure you don't mind before bidding 2. The color may vary depending on the display. Please understand Note: Hello, please pay attention to your shipping address when purchasing products. If your receiving information (such as name, street, house number, doorbell/email without name) is incorrect, the order will not be delivered correctly.)