The RCBS Case Activated Linkage Kit provides everything needed to convert your RCBS Uniflow Powder Measure for use with four-station and five-station progressive presses.RCBS Case Activated Linkage Kit (SKU: RCBS-98911)Compatible with RCBS Uniflow Powder MeasureWorks with both 4-station and 5-station progressive pressesIncludes three powder bushings in different sizesSupports popular pistol and rifle calibersEssential for reloaders looking to integrate their Uniflow Powder Measure into a progressive reloading setup for increased efficiency and consistent powder charges.