The Pietta Black Powder Revolver Nipple Wrench comes with 6 percussion nipples to fit any Pietta black powder revolver. Pietta Black Powder Revolver Nipples are designed exclusively for Pietta revolvers with a 6x3/4 thread pitch. These #10 percussion cap nipples are manufactured from high-grade steel for extended use. Pietta Black Powder Revolver Nipples are great for replacing worn nipples. Pietta #10 Percussion Nipples are designed exclusively for revolvers with 6 x 3/4 threading.