General description This 3-piece Exhaust Pipe Expander Dent Remover Auto Tool Kit is designed for effective repair and installation of exhaust systems. It allows for the uniform widening of exhaust pipes and the removal of dents and pressure points, making it ideal for repair work and eliminating leaks. The kit can adapt new exhaust pipes to old exhaust parts and is equipped with a hexagonal drive for ease of use. Technical specifications Small Expander: 1-1/8" to 1-3/4" Medium Expander: 1-1/2" to 2-1/2" Large Expander: 2-1/8" to 3-1/2" Includes 6 Extra O-Rings Comes with a Carry Case Installation Insert the expander into the damaged pipe end. Turn the expander's turning bar until the dents are removed. Instructions are included for guidance. Usage Ideal for forming pipes and adjusting widths of already socketed pipes under heat supply. Use to achieve the desired pipe diameter by turning the spindle.