Description: 【Premium Material】: The trampoline springs are made of high quality metal, ensuring durability and longevity, offering excellent rust resistance and maintaining their springiness even after years of use. 【Easy Installation】: With T Hook for easy installation. The T Hook helps pull springs and securely attaches to your trampoline frame, labor saving. 【Good Performance】: The springs provide the perfect tension for an enjoyable jump while ensuring safe and reliability. 【Enough Quantity】: This package includes 20 replacement springs and 1pc T Hook, giving you everything you need to rejuvenate your trampoline's performance or replace old or worn out parts. 【Versatile Use】: These replacement springs are for various brands and models of trampolines. Please confirm size before purchasing. Specification: Material: Metal Size Chart: T Hook: 11.5cmx13cm/4.53inchx5.12inch Package Includes: 20 Trampoline Springs 1 T Hook Note: Please allow slightly errors due to manual measurement and different monitors.