Made from injection-molded plastic.
Must be used with the proprietary steel insert (included)which threads onto the 14mm axle and replaces the existing drive side jam nut.
Compatible with all Profile and Madera rear hubs using a 14mm axle.
Only works with Profile or Madera 14mm rear axles as the guard replaces the non-drive side jam nut. WILL NOT work with 3/8" hubs.