Park's Threadless-Fork Saw Guide ensures a straight, accurate cut on threadless carbon forks. Specially designed to accommodate wider, carbon specific saw blades, the SG-8 ensures a perfect cut every time. Slide on the guide, clamp it down and the specially shaped hardened-steel cutting slot guides your saw blade. And, the SG-8 Saw Guide ensures a straight, clean cut on fork steerer tubes up to 1-1/4-inches.