The cordless car polishing machine is a versatile and powerful device which can be used for almost any vehicle surfaces and tasks the kit includes a set of 5 different polishing and sanding discs great for everything from buffing out paintwork to rust removal the speed can be adjusted from 0 3 000 rpm depending on what kind of material or surface youre working on this helps reduce the risk of damage to the vehicle each disc can be changed out without the use of tools thanks to the specia