Ultimate Arms Gear Gunsmith & Armorer's Cleaning Work Tool Bench Gun Mat For Ruger SR 9 ( SR 40 ) Pistol Handgun - Large Exploded View Schematics Diagram of Revolver and Parts List Large Exploded View Schematics Diagram of Revolver and Parts List : 11" x 17" Neoprene rubber backing prevents fluids from penetrating through to work surface Soft polyester top protects gun and parts from scratches