Achieve clean, precise holes in hard, brittle materials with this 12Pcs Diamond Coated Drill Bits Set. Engineered for glass, marble, and granite, the 6-35mm hole saw kit features a durable diamond-grit coating for fast, smooth cutting with minimal chipping or cracking. The included mandrel ensures compatibility with standard hand drills for professional-grade results. Features and Benefits
- Diamond Coated Cutting Edge - Provides superior abrasion resistance for faster drilling and longer bit life compared to standard carbide.
- 12-Piece Size Range (6-35mm) - Covers the most common hole diameters for plumbing, electrical, and hardware installations in one complete kit.
- Reinforced Steel Core Construction - Offers enhanced durability and stability to prevent bending or breaking under pressure.
- Universal 3/8-Inch Hex Shank Mandrel - Ensures secure, quick-change compatibility with most standard corded and cordless hand drills.
- Vacuum Brazed Diamond Grit - Creates a stronger bond for consistent cutting performance and reduced segment loss during use.
- Water Feed Holes in Mandrel - Allows for easy coolant attachment to reduce heat, extend bit life, and minimize dust. Applications
- Tile and Stone Backsplash Installation - Create perfect holes for faucets, showerheads, and pipework in ceramic, porcelain, and natural stone tiles.
- Glass and Mirror Projects - Drill clean holes for shelf brackets, lighting fixtures, or decorative elements in glass tabletops and mirrors without shattering.
- Granite and Marble Fabrication - Execute precise cuts for sink bowls, soap dispensers, or custom countertop modifications with a standard drill.
- DIY Home Renovation and Crafting - Handle a wide array of materials for plumbing, crafting mosaics, or installing bathroom accessories. Note
For optimal performance and longevity, always use with water or a suitable coolant as a lubricant during operation. Apply steady, moderate pressure and avoid forcing the bit to prevent overheating.
Applicable Materials: Glass, Marble, Granite, Stone, Tile, Ceramic. Bit Type: Diamond coated hole saw. Cooling Requirement: Water cooling required. Cutting Depth: 25 mm (standard for hole saws of this type). Drill Diameter Range: 6 mm to 35 mm. Drill Diameter Values: 6, 8, 10, 12, 14, 16, 18, 20, 25, 30, 32, 35 mm. Operation Type: Manual rotary drilling (hand tools). Product Type: Diamond Coated Hole Saw Drill Bit Set. Quantity: 12 pieces. Shank Diameter: 6.35 mm. Shank Type: Hex (6.35mm / 1/4 inch). Cutting Diameter Range: 6 mm to 35 mm. Shank Diameter: 6.35 mm (1/4 inch) (inferred standard). Coating Material: Electroplated diamond grit. Core Material: High-strength steel alloy. Maximum Application Material Hardness: Mohs 7+ (Granite, Quartz). Minimum Application Material Hardness: Mohs 5 (Glass, Ceramic). Cutting Depth Capacity: Approximately 25-30 mm (standard hole saw depth). Operating Speed Recommendation: 500 - 3000 RPM (low to medium speed). Compatibility: Standard rotary drills (hammer function OFF). Bit Quantity: 12 pieces. Bit Type: Diamond coated hole saws. Cooling Requirement: Water cooling recommended for optimal performance and bit life. Drilling Method: Grinding/abrasion action, not cutting. Grit Specification: Coarse grit (inferred for masonry/stone). Included Components: Drill bit set, likely storage case. Primary Application: Brittle, non-ferrous materials (glass, tile, stone, ceramic). Product Type: Diamond Coated Hole Saw Drill Bit Set. Secondary Application: Porcelain, engineered stone. Shank Type: Standard round shank (for drill chucks). Q: What are the exact sizes included in this 12-piece diamond coated drill bits set? A: This set includes a comprehensive range of sizes from 6mm to 35mm. The 12-piece hole saw kit is designed to cover most common drilling needs for glass, tile, and stone projects.. Q: How durable are these diamond coated drill bits for drilling into hard materials like granite? A: The diamond coated cutting surface is designed for durability and efficient cutting through hard, brittle materials. They are engineered to provide reliable performance for multiple uses when operated with proper technique and cooling.. Q: Can I use this hole saw kit with a standard cordless drill for a bathroom tile project? A: Yes, these diamond drill bits are compatible with standard rotary drills and drill presses. For best results on ceramic tile, use a slow speed, apply light pressure, and keep the bit cool with water.. Q: Does this diamond coated drill bit set come with any warranty or guarantee? A: Product guarantees vary by seller. Please check the specific product listing details for warranty information, as it is typically provided by the retailer or platform where you make your purchase.. Q: Is this 12Pcs diamond drill bit set a good value compared to buying individual sizes? A: Yes, this offers excellent value for DIY enthusiasts and professionals seeking quality without premium brand pricing. It delivers reliable performance for regular use and provides a wide range of sizes in one convenient kit..