Iron Grit Abrasive Return Iron Grit Abrasive Mohs Hardness: 7Bulk Density: 160 lbs cuftHard, Heavy good etching abrasiveBreaks down in small angular pieces Wear on nozzles and hosesAngular Shaped / Dark Grey or Black color Product Categories Air Hose & Couplings (25) Brass Ball Valve, Steel Pipe, Hex Bushings (15) Operator Safety (26) Sandblasting Couplings (24) Sandblasting Equipment (13) Sandblasting Hose, Twin Line & Electric Control Cord (38) Sandblasting Nozzles (29) Sandblasting Replacement Parts (25) Sandblasting Valves (30)