The TOOPRE TL-210 Star Nut Installation Tool is designed for installing headset star nuts into bicycle front fork steerer tubes, suitable for mountain bikes, road bikes, and other bicycles. It is compatible with 22.2mm, 25.4mm, and 28.6mm steerer tubes. Made from an aluminum alloy auxiliary sleeve and stainless steel center rod, the tool features CNC machining, hard heat treatment, anodizing, and sandblasted finishing for smooth edges, anti-slip handling, and accurate positioning. The replaceable screw design improves durability, while the complete set weighs approximately 102g, making it ideal for both professional bike shop maintenance and home bicycle assembly.