The Varilex WSF 1600 speed-controlled angle grinder from CS Unitec uses a 12.27 Amp (1,350 Watt) motor and infinite variable-speed control (2,000 to 7,300 RPM), for a variety of grinding and polishing tasks. The VARILEX differs from a conventional angle grinder in its ability to change discs quickly, without tools, using the patented EASY-LOCK clamping nut and spindle lock button.