Kutzall Original Taper Rotary Burr, 1⁄8" Shaft, Coarse - Wood Carving Bit for Dremel, Foredom, DeWalt, Milwaukee. Abrasive Tungsten Carbide, 1⁄8" (3.1mm) Head Dia. X 7⁄8" (22.2mm) Length, T-18-E - Original - Coarse - Head Diameter: 1⁄8", Head Length: 7⁄8"