Trampoline Safety Net --- Attach the trampoline's safety net to the top of the pole (without safety net). Spare Part --- The trampoline's pole guard is specially designed for round tubes with a diameter of 25 mm. Durable Material: The safety net cover can secure the safety net straps and prevent the pole from sliding. Easy Installation: Special hook for simple attachment of the net with the pole guard. Helps to secure your trampoline's safety net to the top of your poles. Package Contains: 12-piece blue trampoline safety net cover, easy to use and replace as needed. Color: Blue Material: Plastic Package Content: 12 x trampoline pole guards Only the above package content is included, other products are not included. Note: Light and different screen displays may cause the color on the product image to slightly differ from the actual item. Thank you! Tolerance for measurement error is +/- 1-3 cm.