The Var Tools Star Nut is an essential workshop tool designed to make installing star nuts in threadless steerers quick, accurate, and hassle-free. Built for professional mechanics and dedicated home tinkerers alike, this tool helps you drive the star nut straight and to the correct depth, reducing the risk of damage to the steerer tube. Compatible with common threadless headset systems, it provides a controlled, centered installation so your top cap and headset preload work exactly as intended.
Using a dedicated star nut setter like this is far safer and more precise than improvising with generic tools. The Var Tools Star Nut typically features a guide shaft and a stop that sets the nut at an optimal depth inside the steerer, ensuring reliable clamping force for your headset. Ideal for both alloy steerers and many common fork designs, it’s a must-have addition to any serious bike workshop. Whether you are building a new bike, replacing a fork, or refreshing a cockpit, this tool helps you achieve a clean, professional result every time.