Model: MD3215HD (6" Industrial Bench Grinder) Voltage: 230V~/50Hz Input Power: 520W No-load Speed: 2950rpm Wheel Size: 150x25x32mm Net weight: 16kgs. Model: MD3215HD-W (one grinding wheel, one wire wheel) 6" Industrial Bench Grinder Voltage: 230V~/50Hz Input Power: 520W No-load Speed: 2950rpm Wheel Size: 150x25x32mm Net weight: 16kgs. Model: MD150/200HD 6"/8" Industrial Bench Grinder Voltage: 230V~/50Hz Input Power: 520W No-load Speed: 2950rpm Wheel Size: 150x25x32mm, 200x40x20mm (fine) Net weight: 17.5kgs. Model: MD3217HD (7" Industrial Bench Grinder) Voltage: 230V~/50Hz Input Power: 520W No-load Speed: 2950rpm Wheel Size: 175x25x32mm Net weight: 18kgs. Model: MD3220HD 8" Industrial Bench Grinder Voltage: 230V~/50Hz Input Power: 900W No-load Speed: 2950rpm Wheel Size: 200x32x32mm Net weight: 28kgs. Model: MD3220HD-W 8" Industrial Bench Grinder (one grinding wheel, one wire wheel) Voltage: 230V~/50Hz Input Power: 900W No-load Speed: 2950rpm Wheel Size: 200x32x32mm Net weight: 27kgs. Model: MD3225HD (10" Industrial Bench Grinder) Voltage: 230V~/50Hz Input Power: 900W No-load Speed: 2950rpm Wheel Size: 250x32x32mm Net weight: 32kgs. Model: MDB100/250HD (8" Industrial Wheel and Belt Grinder) Voltage: 230V~/50Hz Input Power: 900W No-load Speed: 2950rpm Wheel Size: 250x32x32mm Belt Size: 100x914mm Net weight: 32kgs.