The psm 18 li lithium ion cordless multi sander is a compact and powerful tool ideal for sanding and polishing this set version of the tool comes complete with 18 volt lithium ion battery and 60 minute charging station the psm 18 li is part of the 18 volt power4all system of tools meaning that this battery fits all the other tools in the systemthe psm 18 li enables you to sand everything wood or metal small or large surfaces corners or edges many different sanding attachments are avail