Diamond Core Drill Bit with M10 Adapter Rod, 20-35-50mm Beveling Chamfer Bit for Drilling Holes in Porcelain Tile, Stone, Concrete - Complete Kit for Drill Use, Fits 1/2" Chuck, NOT for 5/8" Grinder

★★★★★ 4.8 120 reviews

US$5.60
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US$5.60
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Product details

Management number 247335324 Release Date 2026/08/16 List Price US$5.60 Model Number 247335324
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  • 【3-IN-1 STEP DESIGN WITH PRECISE SIZES】This Effective Diamond Core Drill Bit combines 20mm, 35mm, and 50mm into one Diamond Step Drill Bit. Perfect for drilling, hole enlarging, countersinking, and chamfering on tile, marble, concrete, granite, wood and metal. Achieve smooth, step-by-step hole expansion without tool changes.
  • 【COMPLETE KIT: RELIABLE M10 ADAPTER INCLUDED】Our kit includes a high-quality, precision-machined M10 adapter rod. Perfect for electric drills: securely attach the adapter to your handheld drill. Also compatible with M10 spindle angle grinders (check your grinder's spindle first). NOT for standard 5/8"-11 angle grinders.
  • 【MULTI-FUNCTION HOLE OPENER & REAMER】Features a sharp, multi-layered tip and three-stage reaming design, adept at handling a wide variety of tough materials. The diamond grit coating enables countertop beveling, tile chamfering, as well as reaming, trimming, and polishing on stone and ceramics.
  • 【DURABLE & EFFICIENT CUTTING】High-density diamond particle coating brazed onto a robust high manganese steel body. This multi-layer construction ensures exceptional wear resistance, long-lasting sharpness, and smoother cutting action with minimal dust. Delivers faster penetration and cleaner holes.
  • 【WIDE APPLICATIONS】Ideal for drilling through a wide range of materials including concrete, tile, marble, granite, glass, aluminum, and metal sheets. Perfect for construction, electrical work, DIY enthusiasts, and home improvement projects.

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