Variable speed dial powers the belt anywhere from 1000 to 1600 feet per minute Auto-tracking belt system requires no tensioning or adjustments Pivot the 1/2-by-18-inch belt up to 55 degrees to meet the needs of any project Tool-free belt installation makes for quick and easy belt changes during the job 2.0 amp-hour lithium-ion battery with onboard LED charge gauge delivers consistent power at any charge level, and is compatible with the entire WEN 20V Max Cordless Power Tool series