300 micron, 0.020", 50 grit, 2.0-3.0 MOHS; Bicarbonate Soda abrasive is a special crystalized version of baking soda specifically manufactured for Soda Blasting; Typically used in a pressure blaster and cannot be recycled, as it breaks down on impact; Used to strip paint or light oxidation without etching or warping the surface; Generates very little to no heat and will not warp the surface; Safe on glass, chrome and rubber which makes Soda a great choice for vehicle paint stripping and restoration projects; Environmentally friendly and can be used for many cleaning applications on delicate surfaces