This router table box joint jig is designed to simplify the process of making strong, accurate box joints and finger joints. It includes three index keys and setup bars for 1/4", 3/8", and 1/2" router bits, allowing you to switch sizes easily without complex measuring or trial and error. The clear acrylic body provides full visibility during cutting, helping you maintain precise alignment and cleaner results. An adjustable tightness mechanism lets you fine-tune the joint fit based on wood type and personal preference, ensuring smooth feeding and tight joints every time. Ideal for small woodworking projects, such as boxes, drawers, keepsake cases, and shop storage, this box joint jig for router tables helps you achieve repeatable, professional-quality results. For best results, follow the included video guide, which walks you through setup and use step by step.