Breakthrough Clean Technologies, Armorer's Bench Block, Tool 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 Non-stick Universal design to accommodate most pin removals Includes 1911 Barrel Bushing Wrench Gray Made from durable and non-stick materials provides a solid surface to make firearm pin removal effortless. Universal design to accommodate most pin removals. Includes 1911 Barrel Bushing Wrench.