ROUTER BITCut strong, attractive box joints for small boxes, shallow drawers and trays with this bit. By taking three passes it can be used with stock up to 1/2" thick and 4" wide. The most accurate way to adjust the height of the bit while ensuring a good fit when taking multiple passes is to align a cutter on the bit with one of the previous cuts. The bit has five uniformly spaced 3-wing slotting cutters and a ball-bearing guide on a 1/2" shank arbor. Use in a table-mounted router for best results. Maximum RPM 13,000.