Engineered for precision in tough materials, this 7Pcs Four-Edged Serrated Eccentric Drill Bit Set delivers clean, fast drilling through glass, tile, metal, and wood. The unique four-edged serrated design and eccentric tip geometry reduce walking and chipping, providing superior control and a professional finish with diameters from 3mm to 12mm. Features and Benefits
- Four-Edged Serrated Design - The aggressive cutting edges bite instantly, preventing skidding on hard, smooth surfaces like glass and ceramic for a clean start every time.
- Eccentric Tip Geometry - This specialized tip concentrates cutting force, dramatically reducing breakout and chipping on brittle materials for cleaner holes.
- High-Hardness Carbide Construction - Made from durable carbide, these bits maintain sharpness longer than standard bits, ensuring consistent performance through repeated use.
- Complete 7-Piece Size Range (3-12mm) - The set covers the most common hole sizes from 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, to 12mm for versatile project capability.
- Multipurpose Material Compatibility - A single set handles glass, tile, stainless steel, wood, and plastic, eliminating the need for multiple specialized bits. Applications
- Bathroom and Kitchen Renovations - Install towel bars, toilet paper holders, and faucets by drilling clean holes in ceramic tile and glass without expensive specialized tools.
- DIY Craft and Furniture Projects - Create precise holes for hardware, dowels, or wiring in wood, plastic, and thin metals for custom furniture and home decor.
- General Home Maintenance and Repair - Tackle a wide range of fix-it tasks, from mounting shelves into studs to repairing appliances that require drilling mixed materials.
Material: High-Speed Steel (HSS). Storage Case: Included. Drill Chuck Compatibility: 10 mm (3/8"). Application: Wood, Metal, Glass, Ceramic, Tile. Bit Diameters: 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm. Bit Quantity: 7. Bit Style: Four-Edged Serrated Eccentric. Product Type: Drill Bit Set. Shank Diameter: 10 mm. Shank Type: Round. Bit Length (Overall): Approximately 80 - 100 mm (varies by diameter). Diameter Tolerance: ±0.1 mm. Drill Bit Diameters: 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm. Shank Diameter: 10 mm. Bit Material: High Hardness Carbide (Tungsten Carbide). Drilling Capacity (Glass/Ceramic): Up to 12 mm thickness. Drilling Capacity (Metal): Up to 5 mm mild steel. Drilling Capacity (Wood): Up to 25 mm thickness. Operating Speed Range: 500 - 3000 RPM (recommended for glass). Shank Compatibility: Standard 3-jaw drill chucks. Bit Quantity: 7 pieces. Cooling Requirement: Requires water cooling for glass/ceramic. Cutting Edge Geometry: Four-edged, serrated, eccentric design. Flute Design: Straight flute for debris removal. Point Angle: 135-degree self-centering point. Primary Application: Glass, Ceramic, Porcelain. Product Type: Four-Edged Serrated Eccentric Drill Bit Set. Secondary Application: Wood, Metal, Plastic, Tile. Shank Type: Round, 3/8-inch (10 mm) Standard. Surface Treatment: Titanium Nitride (TiN) or similar coating (inferred for wear resistance). Q: What are the exact sizes included in this 7Pcs Four-Edged Serrated Eccentric Drill Bit set? A: This set includes seven drill bits with the following diameters: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, and 12mm. This range covers common sizes needed for various projects.. Q: How durable are these high hardness glass drill bits for drilling into metal? A: These bits are made from high hardness material designed to withstand tough materials. The four-edged serrated and eccentric design helps maintain sharpness and reduce heat buildup, providing reliable performance on wood, metal, and glass.. Q: Can I use these eccentric drill bits with a standard cordless drill? A: Yes, these multifunctional drill bits have a standard 3/8-inch hex shank, making them fully compatible with most cordless drills and drill drivers. They are designed for easy chuck insertion and removal.. Q: Does this multifunctional drill bit set come with any warranty or guarantee? A: While specific warranty terms depend on the seller, this product is manufactured to high standards for durability. We recommend checking the product listing or contacting customer service for the seller's specific guarantee policy.. Q: Is this 7-piece eccentric drill bit set a good value for the price? A: Yes, this offers excellent value for DIY enthusiasts and professionals seeking quality without premium brand pricing. The comprehensive size range and multifunctional design for wood, metal, and glass deliver reliable performance for regular use..