General description Set of 5 step drills with titanium coating designed for drilling through various materials including steel, wood, plastic, brass, aluminum, and PVC. This high-quality drill bit set replaces 50 individual drill bits, making it an efficient choice for both DIY enthusiasts and professionals. The titanium coating enhances durability and performance, ensuring a longer lifespan and better results. Technical specifications Material: High-speed steel with titanium coating Sizes: #1: 3/16" to 1/2" (6 steps), #2: 1/8" to 1/2" (13 steps), #3: 1/4" to 3/4" (9 steps), #4: 1/4" to 1-3/8" (10 steps), #5: 3/16" to 7/8" (12 steps) Maximum material hardness: less than 25° Maximum sheet thickness: less than 5mm Usage The step drills are suitable for a variety of applications, including: Drilling holes in wood, plastic, thin iron plates, and thin aluminum plates Machining copper and aluminum parts General construction and DIY projects Other information Includes a padded aluminum