Efficient reaming and drilling: This step drill bit combines reaming and drilling functions into one, allowing you to efficiently create clean, precise holes in pipes. Limit swivel groove: The innovative design ensures precise hole openings, preventing over-drilling and maintaining accuracy, and it guarantees professional-grade results in plumbing and DIY projects. Universal hex shank design: Featuring a hexagonal 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: Constructed from high-quality materials, this bit is wear-resistant and designed to withstand abrasion, ensuring durability and reliability. Wide application range: Suitable for drilling water pipes, PPR pipes, PVC pipes, plastic pipes, and other similar materials, making it an essential tool for plumbers, contractors, and DIY enthusiasts alike. Notes: Use at recommended speeds and with appropriate gear. Keep out of reach of children. Color: gold (The actual product may have slight color difference, which will not affect the use) Material: steel Size: diameter 20mm, 25mm, 32mm Package Contents: 3 x Step Drill Bit Set (15-19, 18-24, 24-31) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.