This drill bit is 15/32" in diameter. The drill bit is used for the following kits: -Virage™ FP/RB (also requires 25/64" drill bit) -Baron FP/RB (also requires 25/64" drill bit) -Sedona FP/RB (also requires 25/64" drill bit) -Majestic FP/RB (also requires 37/64" drill bit) -Sketch Pencil (only drill bit needed)