This set includes five distinct burr shapes, each designed for specific applications: C-3 Cylinder Shape with Radius End (3/4" Cut length, 3/8" Cut diameter) – Ideal for contouring and rounding edges. A-3 Cylinder Shape (3/4" Cut length, 3/8" Cut diameter) – Perfect for deburring and creating angled cuts. L-3 Taper Shape (1-1/16" Cut length, 3/8" Cut diameter) – Great for accessing tight corners and smoothing concave surfaces. D-3 Ball Shape (3/8" Cut length, 3/8" Cut diameter) – Suitable for precision carving and creating rounded grooves. F-3 Tree Shape (3/4" Cut length, 3/8" Cut diameter) – Excellent for contouring curved surfaces and shaping inside edges. The Carbide Burrs Set is designed for precision grinding, shaping, and material removal in hard-to-reach areas. With a 4-inch extended shank and double-cut design, these burr bits provide enhanced control and efficiency for professionals and DIYers alike. Made from premium tungsten carbide, they offer exceptional hardness, durability, and wear resistance, making them ideal for metalworking, woodworking, and other fabrication tasks. Each burr features a 1/4-inch shank, ensuring compatibility with most die grinders and rotary tools. Whether you're working with steel, stainless steel, aluminum, cast iron, wood, or plastics, this extra-long carbide burr set provides the reach and performance needed for intricate detailing and finishing.