The Zipp Air Tool Hydraulic/Pneumatic Rivet Nut Tool offers users easy stroke adjustment and easy rivet mandrel replacement. This tool is available with a 3,500-lb pulling capacity (No. ZRN1606E) and a 5,500-lb pulling capacity (No. ZRN2508E) up to 3/8's. This tool offers easy operation with the two-way trigger design and comes in a kit with seven mandrel sizes.