2Pcs Diamond Step Drill Bit Set 20mm 35mm 50mm with M10 Thread, Fit for Angle Grinder and Drill, Hole Opener Chamfer Polish Countersink for Tile Concrete Marble Granite Stone

2-Piece Diamond Step Drill Bit Set – 20/35/50mm M10 Thread for Angle Grinder & DrillUpgrade your drilling capabilities with our professional diamond step drill bit set. Engineered for precision and durability, this 2-piece kit delivers exceptional performance on hard, brittle materials like tile, granite, and concrete. The innovative three-stage design eliminates the need for multiple bit changes, saving you time while delivering clean, accurate holes every time.Complete Package Includes: 2x Diamond Step Drill Bits 2x Shank Adapters for Standard Drills Ready for Immediate UseProduct Features & Benefits:Universal M10 Thread Compatibility for Versatile Use Features a standard M10 thread that fits most angle grinders currently available on the market. The innovative three-stage step design enables progressive hole enlargement from 20mm to 35mm to 50mm without the hassle of repeatedly changing drill bits—significantly saving valuable time and reducing effort on every drilling project, from small DIY tasks to professional installations.Complete 2-Piece Kit with Drill Adapters This comprehensive set includes 2 premium diamond step drill bits and 2 shank adapters specifically designed for use with standard power drills. Everything you need for versatile drilling applications across different tools and materials is included right out of the box, providing exceptional value and eliminating the need for additional purchases.Premium Diamond Coating for Extreme Durability Engineered with high-quality diamond coating that delivers extreme hardness and superior wear resistance through repeated use. Specifically designed to tackle the toughest hard, brittle materials including tile, granite, concrete, and natural stone while maintaining sharp, efficient cutting performance job after job without rapid dulling or degradation.4-in-1 Multi-Function Versatile Design Combines drilling, reaming, chamfering, and polishing capabilities all in one highly versatile tool. Perfect for creating clean, precise holes in tile, marble, granite, engineered stone, quartzite, concrete, bricks, and similar challenging materials—all while significantly minimizing the risk of edge chipping during the drilling process for professional-quality results.Important Purchase Consideration Before ordering, please take a moment to verify your tool's compatibility with M10 thread fittings and confirm that this step drill bit set meets your specific project requirements and material types. Have questions about fit or application? Feel free to message our customer support team—we're genuinely happy to help ensure you select the right tool for your specific job needs.Technical Specifications: Thread Type: Universal M10 Step Sizes: 20mm, 35mm, 50mm Coating: Premium Diamond Included: 2 Bits + 2 Drill Adapters Applications: Tile, Concrete, Granite, Marble, Stone Functions: Drilling, Reaming, Chamfering, PolishingIdeal For: Professional contractors, tile installers, stone fabricators, concrete workers, and DIY enthusiasts who need reliable, multi-size drilling solutions for hard, brittle materials without frequent bit changes.

• 🔩【Universal M10 Thread Compatibility】 Features a standard M10 thread that fits most angle grinders on the market. The innovative three-stage step design allows hole enlargement from 20mm to 35mm to 50mm without repeatedly changing drill bits—saving time and effort on every job.
• 🔩【Complete 2-Piece Kit】 This set includes 2 diamond step drill bits and 2 shank adapters for use with standard drills. Everything you need for versatile drilling applications across different tools and materials, right out of the box.
• 🔩【Premium Diamond Coating】 Engineered with high-quality diamond coating for extreme hardness and superior wear resistance. Specifically designed to tackle hard, brittle materials like tile, granite, concrete, and stone while maintaining sharp, efficient cutting performance job after job.
• 🔩【4-in-1 Multi-Function Design】 Combines drilling, reaming, chamfering, and polishing capabilities in one versatile tool. Perfect for creating clean, precise holes in tile, marble, granite, engineered stone, quartzite, concrete, bricks, and similar materials—all while minimizing edge chipping during drilling.
• 🔩【Important Purchase Note】 Before ordering, please verify your tool's compatibility with M10 thread fittings and check that this step drill bit set meets your specific project requirements. Questions? Feel free to message us—we're happy to help ensure you get the right tool for the job.