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2Pcs 3-in-1 Diamond Step Core Drill Bit - 20mm/35mm/50mm Hole Opener with M10 Thread & Conversion Rod for Marble, Tile, Concrete, Granite, Quartzite in Saudi Arabia 2Pcs 3-in-1 Diamond Step Core Drill Bit - 20mm/35mm/50mm Hole Opener with M10 Thread & Conversion Rod for Marble, Tile, Concrete, Granite, Quartzite in Saudi Arabia 2Pcs 3-in-1 Diamond Step Core Drill Bit - 20mm/35mm/50mm Hole Opener with M10 Thread & Conversion Rod for Marble, Tile, Concrete, Granite, Quartzite in Saudi Arabia 2Pcs 3-in-1 Diamond Step Core Drill Bit - 20mm/35mm/50mm Hole Opener with M10 Thread & Conversion Rod for Marble, Tile, Concrete, Granite, Quartzite in Saudi Arabia 2Pcs 3-in-1 Diamond Step Core Drill Bit - 20mm/35mm/50mm Hole Opener with M10 Thread & Conversion Rod for Marble, Tile, Concrete, Granite, Quartzite in Saudi Arabia 2Pcs 3-in-1 Diamond Step Core Drill Bit - 20mm/35mm/50mm Hole Opener with M10 Thread & Conversion Rod for Marble, Tile, Concrete, Granite, Quartzite in Saudi Arabia

2Pcs 3-in-1 Diamond Step Core Drill Bit - 20mm/35mm/50mm Hole Opener with M10 Thread & Conversion Rod for Marble, Tile, Concrete, Granite, Quartzite

SAR 94
SAR 99
All electronics ship with US style plugs. You may need a voltage converter or a plug adapter.
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Special Features

  • Upgrade your drilling toolkit with our 2-pack diamond step drill bits—designed to handle tough materials and versatile projects for both DIYers and professionals. The 3-in-1 size design (20mm/35mm/50mm) eliminates the hassle of switching multiple bits, while premium diamond coating ensures long-lasting performance for all your hole-drilling needs.
  • 3-in-1 Step Design: One Bit, Multiple Sizes Featuring three graduated diameters (20mm, 35mm, 50mm) in a single drill bit, this tool lets you drill new holes or expand existing ones with precision—no need to carry a bulky set of bits. Whether you're working on small home renovations or large-scale construction, the step design ensures smooth hole expansion and consistent results, cutting down on project time and boosting overall efficiency.
  • High-Density Diamond Coating for Hard Materials Crafted with a thick, high-density diamond particle coating, the cutting edge is ultra-sharp and wear-resistant, capable of penetrating even the hardest surfaces effortlessly. From concrete and marble to granite, quartzite, and ceramic tiles, this drill bit delivers clean, chip-free holes without damaging the material—outperforming standard bits in durability and drilling speed.
  • M10 Thread + Conversion Rod: Multi-Tool Compatibility Equipped with a standard M10 thread interface, the drill bit connects seamlessly to 100mm angle grinders for heavy-duty drilling tasks. Each package also includes a special conversion rod, allowing quick adaptation to handheld electric drills—perfect for tight spaces or projects that require more control. This versatility means you can use the bit with tools you already own, saving you money on additional accessories.
  • All-in-One Functionality: Drill, Expand, Chamfer & Polish More than just a drilling tool—this step bit integrates four key functions: drilling, hole expansion, chamfering, and polishing. It leaves holes with smooth, professional edges, eliminating the need for extra finishing tools. Whether you're installing faucets, electrical boxes, or decorative elements, the efficient design makes drilling time-saving and labor-saving, meeting both DIY and professional quality standards.

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