Ultra Vibe 18 Tumbler for Brass,Metal,Coins,Jwlry Removable Heavy Polyethylene Bowl With Lid Mass creates a cyclonic effect, moves around the bowl and down into the center. Vibrates at 3000 VPM Motor 115 Volt, 1/30 hp, 1.12 amps. Thermally Protected Overall Dimensions - 11 1/2" Dia x 12 1/2" High.