The AX-48 Pro Threaded Adapter is an adapter that fits into the accessory space at the top of your APEX AX-48 Pro! Simple to install, simply snap the AX-48 Pro Threaded Adapter into place and tighten the two included bolts. Once installed, your APEX AX-48 Pro will have a 5/8" thread on top so you can add a microphone boom arm or any number of other devices! Its the perfect addition to your HyperPad, HyperStation QR, or HyperMount QR stands for adding iPads or laptops to the top of your AX-48 Pro!