The SelectLine models come standard with comfortable and solid handles with safety interlock activation to prevent accidental start-up. A convenient compression-style foot pedal lock allows handle adjustment to any operator’s height. The heavy gauge, chrome-plated steel handle provides maximum machine control, strength and durability. Powerful motor and dual or triple (SelectLine 17HD, 20HD and 20TS) planetary gear systems provide smooth, quiet and reliable operation. High torque system allows for smooth start-ups on all hard floor surfaces. The quick-release pad/brush system makes pad holder and brush changes fast and easy – while nonmarking transport wheels are long-wearing and protect floors from damage. The SelectLine 17HD, 20HD and 20TS provide more torque, better cooling and easy maneuverability. The SelectLine 20TS (two-speed) floor machine offers 180/320 rpm, giving extra revolutions when needed.