Weiler Tiger AO 1.5 x 3 inch type 18 plugs deliver the right combination of performance and value. Aluminum oxide grains in combination with a strong bond deliver long product life and a consistent cut-rate when grinding metal. The type 18 shape features a flat face that is ideal for ID cleaning, hole edge beveling, smoothing weld seams, removing gates and parting lines, and cleaning castings in hard-to-reach places. These plugs offer a 5/8-11 inch arbor and are designed for use on die grinders. Whether you are in a fab shop, foundry, or shipyard, you can count on Tiger AO cones and plugs to get the job done fast and done right.