Quality Material: Roller skate bracket is made of pp and steel, which is stable, capable of withstanding long term use and high intensity sports. The roller skate plate features a braking ability that controls your rolling process during your skating Change Regular Shoes into Roller Skate: This roller skate plate is designed with a universal fit, making it suitable for a wide range of roller skates and shoes Adjustable Brake: The brake height can be adjusted according to your skating needs(rubber brake can be ajusted) Simple Design Easy Installation: With its simple design, this product is easy to install and an ideal choice for upgrading or replacing your roller skates. Package includes 1 set skate base (including wrench) Enhanced Stability and Comfort: This roller skate base can greatly enhance your sliding stability and comfort, making your skating experience more enjoyable