1/8 X 1/8 STD Carbide Burr 11 Piece Set. Drill America Solid Carbide Burs are designed for cleaning out material in a wide-range of products including wood, plastics, stainless steel and other metals. Solid Carbide Burs have a long tool life and faster cutting speeds than other substrates. They are double-cut style and have rows of cutting teeth in two intersecting directions for fast material removal and a rougher finish. Drill America Solid Carbide Burs come in many shapes and sizes. Shapes include ball, cone, flame, tree and cylindrical. Sizes range from 1/16" to 1" in diameter with round shanks. 6” length burs available in select shapes and sizes. Set contains sizes: SA42, SA43, SC42, SD42, SE41, SF42, SG41, SG43, SH41, SM43 and SN42. Burs have 1/8" shank.