Check the listing for details. ( 3 J G ) LEFT Muzzleloader Black Powder Pistol Rifle Kentucky Percussion Hammer. Condition: New other (see details). Listed at 18.99 USD. Marked ( 3 J G ) LEFT HANDED Muzzleloader Black Powder Pistol Rifle Shotgun Hawken Kentucky Percussion Musket Hammer Part For LEFT Side of Barrel - Unused Old Stock - Unfinished Not Blued Not Plated so its Got Light Rust from Age - Needs a Polish and Blueing or Plating ?? Not Drilled for Mount Hole Measures 2.44 Inch Tall Thickness at the Mount hole area is .18 Inch The " Throw " or the Distance from the center of the mount hole area to the center of the point the hammer strikes the cap is 1.54 inches See Pics for a Idea of what they Look Like !!! There Maybe Be Hundreds of Guns This Could Fit I do Not Warrant or Guarantee that It Fits Any Particular Gun You Have !! See the Sizes Given To Make 100 % Sure its a Part you Need !!