Efficient Reaming and Drilling: This step drill bit combines reaming and drilling functions in one, allowing you to efficiently create clean, precise holes in pipes. Limiting Swivel Groove: The innovative design ensures precise hole openings, prevents over-drilling, and maintains accuracy, guaranteeing professional results in plumbing and DIY projects. Universal Hex Shank Design: With a hex shank design, it is compatible with a wide range of hand drills and lithium drill equipment, providing versatility and ease of use. High-Quality Materials: Made from high-quality materials, this drill bit is durable and resistant to wear and tear, ensuring reliability. Wide Range of Applications: Suitable for drilling water pipes, PPR pipes, PVC pipes, plastic pipes, and pipes, making it an essential tool for plumbers, contractors, and DIY enthusiasts. Notes: Use at recommended speeds and with appropriate safety equipment. Keep out of reach of children. Color: gold (The actual product may have slight color difference or variation, which does not affect use) Material: steel Size: diameter 20mm, 25mm, 32mm Package contents: 3 x Step Drill Bit Set (15-19, 18-24, 24-31)