Complete stud kit, inclues 1.375" Top Gun II, Black Air Lite XL Backer, SS Nut - QTY 96. Track Cutting Tool, Track Marker, T25 Torx Bit and track drill template. DOES NOT INCLUDE Tunnel protectors. Heat-treated stainless steel studs with 80° mining grade carbide tips for strength. Air Lite XL backers from DuPont blend for durability. Stainless steel lock nuts for a complete rust-free package. TracProtect design: lightest kit with Airlite backer’s track-friendly radius edge. Lock nut and backer create industry exclusive secure fasten that eliminates #1 cause of pullouts, stud loosening Low-profile head sits flush, protecting idler wheels and running gear. 1-1/32” stud head is the largest for 2-ply, preventing pullouts. Stud Kit has Lifetime Warranty against breakage. Provides 3/8" of penetration above lug on: 1.25" Rip Saw, Ice Ripper, Ice Attack & 1.35 Cobra OEM tracks on Arctic Cat, Polaris & Yamaha. NOT COMPATIBLE WITH 1-ply Ski-Doo OEM tracks(use Top Gun SP). Complete stud kit, inclues 1.375" Top Gun II, Black Air Lite XL Backer, SS Nut - QTY 96. Track Cutting Tool, Track Marker, T25 Torx Bit and track drill template. DOES NOT INCLUDE Tunnel protectors.