... High Polish Shatter Resistant .20g non-bio.25g non-bio.20g bio.25g bioEach 4000 round bag packing. ... tolerance; that means every shot will follow in as close as possible a path to the ... They are normally made of plastic, 6mm in diameter and weight about .12 grams and ... in different colors; including glow in the dark. .20gram, .25gram, airsoft bb, airsoft bbs, High-Polish, premium grade, non-bio bb, bio ...