Excellent high-speed cornering control 1/2ö host runner features 6ö of 60? sharp edge turning carbide Wear pads are a full 1-1/2ö long Full-length hardweld surfaces between all three carbide inserts provide extended wear Extra-long studs make it easy to install plastic ski skins Track studding recommended Features 6ö of 60? carbide 1/2ö round bar with Flat-Top« design Provides safety and control for both studded and un-studded sleds Some skis may require drilling an additional hole.. WEARBAR TRAILBLAZER USI