Two-wheeled bench grinder Bench grinder, for dry and wet grinding, wheel diameter 150/200 mm, voltage / frequency: 230 V / 50 Hz, power input: 250 W S2 30 min, no-load speed: 2960 / min, dry grinding: 150 x 20, inner O 12.7 mm, wet grinding: 200 x 40 x 20 mm