Features & Benefits: The Parking Sensor and Lens Hole Maker is the precise and clean way to create holes in order to install driver assist sensors on replacement bumpers.; Easy to use with a wide variety of sizes make this tool a must have for any shop.; Hole sizes: 17mm, 18mm, 18.2mm, 19mm, 20mm, 22.5mm, 24mm, 26mm, 26.7mm, & 32mm; Cuts clean through the bumper; Stack the discs;