The pipe stretcher kit is a convenient, inexpensive alternative to hydraulic pipe expanders. 
Comes in a molded storage case. 
Stretches Pipe up to 4-1/4"Including Stainless Steel.
Use with an impact wrench to quickly stretch pipes. 
Collet sets expand pipes from 1-5/8"to 4-1/4".
The tool can be used on the vehicle.