New Hornady Lock N Load Bullet Tube 44 SPL 44Mag 45 Auto 45 Colt Fast and flexible system 44 SPL 44Mag 45 Auto 45 Colt:Chrome the S650 a part of Navy Violet the S650 a part of the Speed Brigade Series Foamed Plastic Core Composite Reinforcement Surrounding Core Provides Unmatched Durability 3 Length To Weight Ratio NCAA & NFHS Approved Approved For Minor League Game Play By Major League Baseball and Perfect Game Events meaning the bullet will only be fed upon contact with the case 44 SPL 44Mag 45 Auto 45 Colt Works with standard progressive press when using the Hornady Lock N Load bullet feeder Eliminates the need for bullet feeder hopper Feeder dies are case activated