The HPA Biodegradable BBs are designed for consistent performance, environmental sustainability, and reliable accuracy in airsoft games. These 0.30g BBs offer a heavier weight for enhanced stability and accuracy at longer distances. The package includes 3300 rounds of BBs, providing you with a generous quantity for extended gameplay. The BBs have a smooth surface for improved flight stability and reduced jamming. They are 6mm in diameter, which is the standard size for airsoft BBs. These biodegradable BBs are made with materials that will naturally break down over time, reducing their impact on the environment. They are an excellent choice for airsoft players who prioritize both performance and sustainability.