X-10-ONE TRAIL: An excellent all-around trail carbide with mild, easy to steer control. Ideal for smaller machines. 1 stud length for instalation with ski skins. 90° 1/8 x 4 steering carbide, Two 1 carbide wear pads, Two 3 Masterweld pads. X-PR-ONE HIGH PERFORMANCE: 6-1/2 of 60° carbide in a 1/2 diameter host bar. Designed for the rider who uses studs to hook-up. 1 stud length for installation with ski skins. 60° x 6-1/2 steering carbide, Two 2 carbide wear pads rear, Two 2 carbide wear pads front.