Use on metals, castings, welded joints, rivets and rust. Ideal for sharpening, deburring and general purpose grinding of most materials. Shank Dia 1/8"
Standard, well made Dremel bits. Easy to use we sight, ordering, and average time in transit was a pro. The Cons are several bits listed were our of stock, and what they have is same retail price I could buy at any hardware store.