Kerr .44-caliber cap & ball conicals. Actual diameter is .457" and weigh 225. They have a long tapered heel, which allow them to sit very low in the chamber mouth when loading. This in turn allows them to be used easily even in revolvers that are only cut for round ball (the much-proliferated Cabela's Pietta .44 "Navy" being a prime example). This long heel also makes them ideal for making your own combustible cartridges. Price includes US shipping.