2Pcs Diamond Step Drill Bit, 20mm 35mm 50mm Diamond Core Drill Bit Diamond Hole Opener Puncher Round Hole Cone Grinder Bit for Marble Stone Tile Concrete Granite Quartzite, M10 Thread
$32.99
$32.99
$
16
.99
$16.99
- Three-in-one size design: 20mm/35mm/50mm are available to meet different hole diameter requirements, achieve precise hole expansion, and significantly improve work efficiency
- Durable material: High-density diamond particle coating is used, the cutting edge is sharp and durable, and can quickly penetrate hard materials such as concrete, tiles, marble, etc.
- M10 thread: M10 thread interface is used, which can be easily connected to the 100mm angle grinder; the package contains a special conversion rod that can be quickly adapted to the use of handheld electric drills to meet the needs of different construction scenarios.
- Multi-functional application: It integrates the functions of drilling, hole expansion, chamfering, and polishing existing holes. It is widely used in various materials, including concrete, tiles, marble, granite, quartzite, and microcrystalline stone.
- Efficient hole opening: Designed for precise hole opening, it can easily meet DIY and professional needs. The three-step size makes drilling operations time-saving and labor-saving
