TIGHTENER C53150 70057|Flexco’s Alligator fasteners are designed for use on machinery with fractional and multiple V-belt drives. A single strong joint enables fast repair of damaged conventional V-Belts with all types of drives. They are made from plated steel to resist corrosion. The kits include everything necessary for installation, such as a holder, tightener or rocker pin tool. Sizes are available for A, B, C and D sections.