... seamless, roundness, polish 0.20g airsoft BB,Brand"GoldenBall"1) high precision, seamless, roundness, polish 2) Perfect spheres and no air ... black, green, or others8) Designed for tight high performance barrels - model: GB3020W, 0.20g, 5.95+/-0.015mm, white; 4000 Rounds/Bag, 20Bags ... Rounds/Bag, 20Bags/Carton- model: GB4020BK, 0.20g, 5.95+/-0.01mm, black; 4000 Rounds/Bag, 20Bags/Carton- model: GB4020GR ...