Want quick access to FS4 and FS5 on your HX Stomp, but don't want to lose any more pedalboard space? Then this is the solution for you! Simply attach the Helauxy to your Stomp via the pre-applied double-sided 3M VHB tape adhesive. Our switch was designed to not interfere with any of the other controls on the front of the HX Stomp. You still have full access to all buttons and knobs.