Pulse-Matic, will run the machine at a fixed speed of 6000 strokes per minute, but with full bottom end penetration making it suitable for the Low Trauma Technique used with Pulse-Matics. It won't slow you down if coming from D.C. machines! A less expensive entry option for first time users. 220-240 Volts only, CAT.# 69 NZ$75.00 Picture may vary form actual unit. We recommend first time Pulse-Matic users start with this unit! I personally run all my machines at this speed!