Fitment Note:Designed for the Ski-Doo XP and Camso single ply tracks.This stud will offer more support for the trail rider that is running fewer studs than recommended on either the single ply tracks or the 3 ply tracks. It features 60° carbide tip for aggressive penetration, and chamfered head design to reduce vibration and idler wheel wear. Use with "Power Plate + Plus" Backer Plates for all five (5) available lengths. (Power Tower Lock-Nut recommended for 1.375", 1.500" and 1.625")Features: 5/16"-24 threads Lightweight and durable design Sold Each Don't forget stud nuts! Stud Boy Power Tower Snowmobile Stud Lock Nuts Woody's Aluminum Snowmobile Stud Big Nuts Woody's Snowmobile Standard Stud Lock Nuts NOTE: Nuts are not included and must be purchased separately.