Tools Dk-Lok brings you excellent quality Outstanding customer service and availability Enjoy Dk-Lok tube fitting working your application ! Hydraulic Swaging unit DHS Hydraulic Swaging Unit DHS-2A Setup and Operating Instuction. Catalog 2D / 3D Brief Description Pre-Swages Dk-Lok ferrules onto tubing : Fractional : 1/2″, 5/8″, 3/4″, 1″, 1-1/4″, 1-1/2″, and 2″ Metric : 12, 14, 15, 16, 18, 20, 22, 25, 28, 30, 32, 38 and 50 mm Assure consistent make-up the with only about 30% of the manual pull-up torque. Reducers installation time. Easy to use by one operation Different size can be pre-swaged just by replacing Die and Jig. Portable with wheels on sturdy aluminum carrying case.