Delta 40-694 Variable Speed 20-inch 110Volt Scroll Saw

Electronic variable speed adjusts from 400 to 1,750 strokes per minute (SPM) Unique dual parallel-link arm design reduces vibration and noise Upper arm lifts and locks in raised position for blade changes or adjusting blade position On/off switch, electronic speed dial, flexible dust blower, and blade tensioning lever are all conveniently located up front Tool-free blade clamp allows for quick and easy blade changes Single lever, tool-free blade tensioning allows for easy blade adjustment, preventing broken blades