Breakthrough Clean Technologies, Handguard Removal Tool, For AR15, Used to Manipulate Delta Ring While Protecting Firearm NEW WARNING Warning WARNING California Prop 65 WARNING. These products contain a chemical known to the state of California to cause cancer, birth defects and other reproductive harm. Lead: Cas-No. 7439-92-1 One-Piece Nylon Coated Steel Construction Used to Manipulate Delta Ring While Protecting Firearm Ergonomic Grips to Allow Use with One Hand Product Description Breakthrough's Handguard Removal Tool allows you to easily manipulate your Delta Ring While Protecting the Firearm.