The RCBS Quick Change Powder Measure can quickly go from light pistol to magnum rifle charges. The hopper hold 1 pound of smokeless powder. The unit features metering assemblies that change out with the pull of a pin. Extra metering assemblies can be purchased to have them preset for favorite smokeless powder charges. The drain attachment empties the powder hopper without the need to remove it from the stand or press. Note: The Powder Measure should be used in conjunction with an accurate powder scale for setting the original charge and for checking charges occasionally during the run. - Allows reloaders to quickly convert from light pistol to magnum rifle charges - Includes a drain attachment and small and large metering assemblies - Quick Change parts can be used to upgrade existing Uniflow Powder Measures