The unbreakable, adjustable ASV F3 lever is an excellent upgrade from your stock lever. Unbreakable design. Adjustable reach with four inches of range. Micro-adjustable reach with 180 increments. Material: 6061 aluminum alloy. Process: Forged. Steel, sealed bearings on pivot. Chrome silicon high-tension spring. Stainless steel fasteners. Completely rebuildable. Three-year guarantee. Pro Perch includes: CNC adjust-on-the-fly cable adjuster. Double bearings between the perch and lever. Nylon "Rotator" sleeve between the perch and handlebar to allow vertical movement to further reduce the chances of breaking a lever. Built-on dust covers.