Electric and Gas Powered Edco Grinder Great general purpose rough slab grinder Good for trowel marks and water spots removal Other Features include: With various attachments available to grind concrete, remove mastics, urethanes, paints, rubber, food residue, grease, etc. We have available: • Stones - Scarifiers - Diamond Grinding Set - • Scrape - R - Tach Kit • 5.5 hp gas powered model available • 1 1/2 hp electric model available • Weighs approx. 225 lbs.