Step Drill Bit Reamer For Tile Marble Concrete 20mm 35mm 50mm M14 Shank♪
Shank Thread: M14. A conversion rod is required for compatibility with handheld drill, ensuring adaptability to various power tools. Specifications: 20mm / 0.8in, 35mm / 1.4in, 50mm / 2in. Use: For drilling ceramic tiles, marble, etc.