Balls of Steel, 4.4 mm Cal. Weight 0.37 oz.
500 steel balls to practice Airsoft gauge 4.4 mm. and weighing 0.37 grams. each ball. They have an accuracy of 4.4 mm. roughly 0025. Steel balls with a special coating to prevent copper corrosion in wet conditions. The bag comes with airtight ciere to prevent corrosion.