The router table jig is designed for effortless use, especially when creating sturdy box joints and finger joints. It includes 3 sizes of index keys and setup bars, allowing you to easily switch between end mills with cutting diameters of 1/4 in, 1/2 in, and 3/8 in. The high-definition acrylic design provides clear visibility of the cutting process, ensuring precision every time. The box joint jig features an adjustable tightness mechanism, guaranteeing a smooth push during cutting for flawless results. Perfect for woodworking enthusiasts, this router table box joint jig simplifies the process of crafting durable box joints and finger joints. For detailed instructions, please watch the provided video. Ideal for use with a router, this jig is a must-have for any workshop aiming for professional-quality joints.