50 Round Box.Blazer Brass is backed up with the quality and consistency of CCI who supplies the reliable non-corrosive boxer primers and dependable clean-burning propellants for Blazer's ammo. With reloadable newly-made brass cases and a protected-base (gas check) full metal jacketed projectiles these Blazer Brass 10mm rounds are an economical and consistent choice for the range for training or for competition.Blazer Brass is built in America to SAAMI standards and also backed up with rigid ISO certified systems.