Biodegradable airsoft BBs 0.20g 5,000 rds Highly polished Made in Taiwan These .20g biodegradable airsoft BBs decompose naturally over time and eliminate the need for clean up after intense airsoft wars. The BBs come in a 5,000 rd bottle for easy carrying in the battlefield. These BBs are great for use in CO2 & green gas airsoft pistols as well as AEGs.