Plumbers and DIYers, this 3-piece PPR lifting drill set is absolutely essential for working with plastic pipes! The set includes three different sizes: 15-19mm, 18-24mm, and 24-31mm blade diameters, covering the most common PPR pipe sizes you'll encounter. The standard 1/4 inch hex shank makes these compatible with most power tools and drill chucks, so you don't need any special adapters. The 90-degree angled tips are designed for incisive and accurate countersinking, ensuring clean, neat machining that looks professional every time. Made from high-speed steel with a titanium coating finish, these bits have high hardness and excellent impact resistance, meaning they'll last through multiple projects without dulling or breaking. The exquisite workmanship gives them sharp cutting edges and high machining accuracy, resulting in smooth, clean drilling that improves your efficiency significantly. While they're specifically designed for PPR plastic products, they work well with other similar materials too, making them versatile additions to your tool collection. Whether you're installing new plumbing, making repairs, or working on DIY projects involving plastic pipes, having the right size stepped drill bit makes the job so much easier and more professional-looking. No more struggling with improper tools or messy results - these specialized bits deliver clean, precise holes and expansions that fit pipes perfectly. If you work with PPR pipes regularly, this set will quickly become one of your most-reached-for tools in the box!