Trampoline Cover --- Attaches the trampoline safety net to the top of the pole (no safety net). REPLACEMENT PARTS --- The pole cover for the trampoline pole cover is designed for shell poles with a diameter of 25 mm. DURABLE MATERIAL : Trampoline caps can fix the safety net straps and prevent the poles from slipping. Easy to install: Special hooks can easily connect the net with the housing pole. Helps secure your trampoline safety net to the top of the pole. Package includes: 12pcs blue trampoline hats, easy to use and replace to meet your needs. color: blue Material: Plastic Package Contents: 12 x Trampoline End Caps Only the above package content, other products are not included. Note: Lighting and different monitors may cause the item color in the pictures to be slightly different from the actual item. Measurements allow +/- 1-3 cm. Products from NIUNIU's store