Inclined flask holder with spring clamp and rubber pad is rotated at variable speeds up to approximately 700 rpm by means of a universal motor with worm type reduction gear and rheostat. Flask holder, rheostat knob and switch are mounted on the front panel of the enameled sheet metal motor housing. Overall dimensions without flask, 8"L x 8-1/2"W x 7-1/4"H. with 3 wire cord plug. for 120Volts; 80watts. Without glass ware.