The Lavina L25GE 25" Propane Grinder and Polisher with a 110V Ermator S36 Vacuum ready for rental in its own enclosed trailer is the perfect choice for your large grinding and polishing jobs. It is also a great machine to prep for epoxy floors. This grinder if often used for garage floors. CLICK HERE for detail steps on grinding and polishing. Understanding the process will go a long way to making your job go smoothly. Sometimes referred to as a walk behind concrete floor sander, propane concrete finisher, concrete polisher sander, or walk behind floor polisher concrete resurfacing machine.