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-, , and to withstand abrasion and , ensuring and reliability. wide application range:Suitable for drilling water pipes, PPR pipes, PVC pipes, plastic pipes, and pipes, making it an essential tool for plumbers, contractors, and DIY enthusiasts alike.<br><br>notes to use at recommended speeds and with appropriate safety gear. Keep out of reach of children. Colour:gold (The actual product may have slight color difference or difference, which not affect the use) Material:steel Size: diameter 20mm, 25mm, 32mm<br><br>Package Contents: 3 x Step Drill Bit Set(15-19,18-24,24-31)<br><br>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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.