The Diamond Core Drill Bit, Stepped Metal Drill Bits 20-35-50mm Hole Expander, is a reliable and efficient tool engineered for a wide range of drilling tasks. Designed with a tiered structure, this drill bit combines three essential diameters—20mm, 35mm, and 50mm—into one compact tool, enabling users to expand holes with greater precision and speed. The stepped design allows for smooth transitions between sizes, reducing the need for multiple drill bits and enhancing overall productivity. Crafted with premium diamond material, this stone core bit offers exceptional durability and stability, ensuring long-term performance even in high-friction drilling environments. The drill bit can be effortlessly installed on most standard electric drills, requiring no additional adapters or complex setups. For optimal results and extended lifespan, water is recommended as a lubricant during use to reduce heat and friction. This core drill bit is ideal for tasks involving drilling and hole expansion in metal, concrete, tile, marble, and artificial stone. Whether used by professionals in construction and renovation or by DIY enthusiasts, it provides a convenient and dependable solution for demanding drilling operations. Its compatibility with a wide range of materials and its integrated multi-size feature make it a versatile addition to any tool kit, supporting both commercial and residential applications.
【Versatile Size Options】This Diamond Beveling Chamfer Bit features a stepped design with 20mm, 35mm, and 50mm sizes, allowing for precise hole expansion in various applications
【Stepped Design Enhances Drilling Precision】The stepped drill bit for metal tiered step structure allows for gradual cutting depth, helping reduce drill slippage and ensuring cleaner, more accurate hole expansion for each selected diameter
【Efficient Cooling with Water Lubrication】Utilizing water as a lubricant during drilling helps reduce heat and friction, enhancing the lifespan and effectiveness of the drill bit
【Easy Installation on Standard Drills】Designed for compatibility with most standard drills, this core bit requires no special tools or expertise for installation and use
【Suitable for Heavy-Duty Applications】Ideal for both professional and DIY projects, this diamond core drill bit maintains sharpness and efficiency even after multiple uses