This brake pad fits our Powerslide Jet kid's adjustable skates. Usually, it should take a max. 1 minute to replace your old brake. The brake pad is made of long lasting NR/SBR material, a mix of natural and synthetic rubber blends. [ "Assembly Hardware: Included", "Assembly of Brake Pads: With screw", "Hardness Brake Pads: 85A", "Material Brake Pads: PP + TPR (polypropylene + thermoplastic rubber)", "Max. Wheel Size: All wheel sizes of the skate model", "Segments: Inline Skating", "Net weight (kg): 0.02", "Gross weight (kg): 0.02", "Packaging Size: x x ", "Weight: 0.02", "VPE Packaging: x x ", "Warranty: 2 years", "Release Year: 24