The APEX UCA Gusset is intended to be used with our APEX Truss Upper Link Mounts to bridge the gap between the APEX truss and the brackets. This gussets allows the brackets to be placed at various angles and widths so you can set up your suspension the way it needs to be made and then you can be assured your UCA brackets will fully contact the truss. Made from 1/4" mild steel. You need two gussets for a pair of Upper Link Mount brackets.