Ordered this kit based off of reviews, so I could expand exhaust tubing for my twin turbo LS project. With an electric impact wrench ($35 harbor freight piece I've had for years), it worked great. Just keep the parts and threads lubed up and rotate the expander a few degrees throughout the process to eliminate flat spots.in the tube. Wear hearing protection, as the process is deafening. You'll need a 26mm socket to drive the unit. Overall, good product and works as advertised.