Mark V Lab METPOL 2V2 Series Bench Top Dual Wheel Grinder/Polisher. The 2V2 features: Countdown Timer, Variable speed (0-600 rpm) operation with CC & CCW rotation, Solenoid water control with bowl washout and rugged GRP (glass reinforced plastic) construction. The 2V2 utilizes 2 ea. 8" Aluminum Wheels and comes with Splash Guard, Paper Holding Band and Covers. 10" Wheels are also available for this machine. 110V 60 Hz.