The Quick Change Powder Measure is a great powder measure for reloaders who reload a variety of different cartridges and hate having to reweigh charges every time they switch between calibers. Quick Change parts can be used to upgrade existing RCBS Uniflow powder measures to have the same features as the Quick Change Powder Measure. Notes: Adapter allows the use of the Quick Change funnel kit drop tube and adapters or the Quick Change High Capacity drop tubes on Uniflow, Competition and Lil Dandy powder measures.This adapter requires the user to unscrew the current drop tube that is installed in their powder measure.