Any fastener with a name like star fangled nut was destined to cause headaches. Most mechanics have battled with troublesome star nuts and know having the right tool makes a world of difference. Pedro's Star Nut Setter was designed to make star nut installation quick and easy. Compatible with 1" and 1 1/8" steerer tubes, the Pedro's Star Nut Setter features a guide that surrounds the steerer, providing perfect alignment and perfect depth every time. The compact size is perfect for the tool box and the tool steel construction ensures long-lasting performance.