20-30 Grit (#25) Crushed Glass Abrasive - 19 lb or 8.6 kg - Blasting Abrasive Media (Course - Very Large) #25 Mesh - 940 to 559 Microns - for Blast Cabinets Or Sand Blasting Guns: Amazon.com: Tools & Home Improvement
Choosing the Right Blast Media for Abrasive Blasting