The drill bit boasts an easy-to-use design, compatible with standard drills for quick and precise hole creation. Ideal for professionals and DIY enthusiasts, it requires no specialized-tools or skills, ensuring hassle-free operation across various materials. Crafted from premium materials, this industrial-grade tool offers exceptional durability and longevity. The drill core maintains sharpness even after multiple uses, making it a reliable choice for heavy-duty applications in diverse environments. Featuring a sharp 20-35-50mm multi-layer conical eye retractor design, this diamond core drill ensures smooth and accurate drilling through hard materials. With three-stage eye retraction capability, it delivers high efficiency and rapid results with each use. Designed to tackle a wide range of materials such as concrete, granite, marble, quartz, and ceramic tile, these multi-layer conical reamer drill bits excel in home renovations, construction projects, and professional applications. Their reliable performance makes them a go-to choice for various drilling needs. The innovative design of these effective diamond drill bits reduces chamfering pressure, facilitating easier expansion and polishing of flat or angled surfaces. This feature enhances versatility and makes the hole opener suitable for a wide range of drilling needs. Item Name: Drill Bit Material: Metal Features: Long Lasting, Practical, Rustproof, Durable Size Details: L: 5cm/1.97", W: 5cm/1.97", H: 6cm/2.36" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: Style 1pc: 1 x Drill Bit Or Style 2pcs: 2 x Drill Bits