4 lbs or 1.8 kg Ground Walnut Shell Media 18-40 Grit - Fine Walnut Shells for...
Box of 18-40 Grit Fine Crushed Walnut Shells, 1.8 kg | 4 lbs. For use with blasting or vibratory tumblers. ALLERGY ALERT! - Grit Material: 100% Ground Walnut Shells. - 18-40 Grit Fine Abrasive Consistency.