Check the listing for details. STUD BOY SUPER-LITE PRO SERIES DOUBLE BACKERS 0.75" 48/PK - 2512-P2-RED. Color: RED, Condition: New. Listed at 115.52 USD. STUD BOY SUPER-LITE PRO SERIES DOUBLE BACKERS 0.75" 48/PK - 2512-P2-RED The SUPER-LITE Pro Series backer is designed for the rider who is looking for lightweight stud support that offers the lightest weight and best traction available and includes the support nut molded directly into the backer. These backers are made from engineered polymers, they are lighter than aluminum, while still maintaining excellent strength. SUPER-LITE Pro Series backers are available in both single and double configurations in black and white. The double backers are available in .500in. and .750in. heights while the singles are available in the .750in. height. The SUPER-LITE Pro Series double backer is used for standard tracks using a regular Power Point type carbide studs while the Pro Series single can be used with either standard or +Plus style studs on both single and double ply tracks. Super-Lite Pro Series backers offer the lightest weight and best traction available from a backer plateDouble backers for single ply tracks may also be used in 2-ply tracks with standard heads for additional tractionIncludes the support nut molded directly in the backerUse with all push through style studs, do not use T-nut style studsFor ease of installation, use Stud Boy's new Pro Series Backer Installation Tool / eBay item number: 223729379247 Thank you for your business and may you have happy trails from here and forever! RoomaZoom Cycles