Simplify pen assembly with the DCT Deluxe Pen Turning Assembly Compress Vise Jig Presser Tool. This tool applies even pressure and prevents your project from cracking as you press the hardware together. It can be used with items up to 5.75 inches long. Press the top button to reposition the threaded shaft, use the adjusting knob for pressure adjustments, and use the pressure pad for length micro adjustment fine-tuning. The self-rotating head automatically makes fine adjustments, but note that the connecting screw must be set properly and tightly before use. The steel handle has a rubber grip and exerts 300 pounds of force. This tool prevents splitting and ensures proper assembly while the wide base installs onto a workbench and offers extra space for handling.