Usage Tips: Upgrade Your Trampoline: Enhance your trampoline setup with these T shaped pipe sleeve, designed for easy connection to the top of your trampoline frame, ensuring a secure and stable fit Versatile Fit: With interface diameters of 16mm and 21mm, these parts provide a snug installation that prevents loosening or detachment during use Material: Made from quality PP, these trampoline enclosure pole end caps are built to withstand regular use while maintaining their integrity over time Great for Enthusiasts: Essential for any trampoline enthusiast looking to maintain a safe and reliable jumping experience without hassle Convenient Packaging: Each pack includes three pieces trampoline enclosure pole end caps, providing ample parts for quick replacements or upgrades as needed Specification: Material: PP Size Chart: 8.8cmx7.6cm/3.46inchx2.99inch Package Includes: 3 Trampoline Enclosure Pole End Caps Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.