Solid polymer construction is extremely resistant to chipping or shattering Excellent choice for ensuring your BBs hit their mark Resealable package allows easy storage of BBs Seamless, spherical competition grade BBs free of imperfections 5.94mm - 5.96mm diameter BBs designed for all FPS ranges BBs emit a glow-in-the-dark luminescence when exposed to bright light In the Box 1X 1Kg Bag of Tracer BBs Specifications: Brand BLS Perfect BBBuild PolymerCompatibility 6mm BarrelsColor Green California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov