- Precision Drilling Sizes : Available in 4-12 mm, 4-20 mm, and 4-32 mm. Each size is clearly lasered onto the bit for quick and accurate size selection, ensuring precise drilling every time. - High-Quality Construction : Made from premium high-speed steel (HSS) and coated with titanium, these step drill bits minimize friction and heat, enhancing durability and performance. - Versatile Use : Ideal for creating clean and precise holes in a variety of materials, including steel, brass, wood, and plastic. This versatility makes it a crucial tool for both DIY enthusiasts and professionals. - Single Bit, Multiple Sizes : Save time and space with one drill bit that can efficiently cut multiple hole sizes, eliminating the need for a bulky set of individual bits. - Practical Applications : - Perfect for electricians needing to drill in metal or plastic conduit. - Excellent for carpenters who require precise holes in wood for dowels or hardware. - A fantastic choice for metalworkers looking to create accurate openings in sheet metal. Elevate your drilling experience with this reliable step drill bit set, designed for efficiency and high performance across multiple applications.