They are 6mm in diameter, which is the standard size for airsoft BBs.
The BBs are biodegradable, making them environmentally friendly and reducing their impact on the environment.20g BBs have built-in tracer technology, allowing them to illuminate in low-light conditions when used with a compatible tracer unit. They have a smooth surface for improved flight stability and reduced jamming.Lancer Tactical Bio Tracer Airsoft BBs, 0.