Features Carbide Material These drill bits made of premium carbide material protect against rust and ensure long-lasting performance and longer use. MULTIPURPOSE These step drill bits are suitable for drilling in various materials such as wood, metal, plastic and more. They are versatile and can handle a variety of drilling projects. Multifunction These drill bits are designed for step drilling, cone drilling, spiral drilling and hole reaming, and suitable for various drilling tasks. Wide Application Ideal for maintenance, home decoration and DIY projects. This step drill set is an essential tool in your toolbox. 5 PIECE SET This step drill bit set consists of 5 pieces with specifications from 1/4" to 1-3/8", 3/16" to 7/8", 1/4" to 3/4", 1/8" to 1/2", 3/16" to 1/2", providing versatility for different drilling needs. Specification: Item Type: Step Drill Bit Material: carbide Specification: 1/4 to 1-3/8 inch, 3/16 to 7/8 inch, 1/4 to 3/4 inch, 1/8 to 1/2 inch, 3/16 to 1/2 inch Package list: 5 x step drills. Package List 5 x Step Drill Bit