High-performance router housing that connects to a 5/8 x 11 angle grinder to quickly cut a precise 2 9/16” wide groove for your brace, with an added bonus. The Brace Setter Adjustable allows you to adjust the cutting depth from 0 to 3/8. By turning the blue top of the Brace Setter Adjustable, you can move the blades up or down to make a precise grove at any depth required. The Brace Setter Adjustable also has more cutting power with 3 cutting blades instead of 2, for a total of 54 long-lasting tungsten carbide teeth.