|
|
| Brand Name: | XRTOOLS |
| Model Number: | 12mm |
| MOQ: | 500PCS |
| Price: | 0.05-2.7$/PCS |
| Delivery Time: | 30-45days |
| Payment Terms: | T/T, L/C, D/P |
The U Double Flute Masonry Core Drill Bit Series (3mm–14mm) is designed for high-performance drilling in brick, block, concrete, and natural stone. Featuring a precision-engineered U-type double flute design, these bits provide faster chip removal, reduced friction, and exceptional drilling stability — ideal for professional builders, installers, and construction tool distributors.
Each bit is made from premium alloy steel and equipped with a high-quality tungsten carbide tip, ensuring long-lasting durability and sharp cutting edges even under extreme working conditions. The U-shaped double flutes effectively guide dust and debris out of the hole, preventing clogging and heat buildup. Combined with a fully heat-treated body and CNC-ground precision flutes, the bit ensures smooth drilling performance and extended tool life.
The core-style cutting geometry enhances centering accuracy and reduces vibration, resulting in cleaner, rounder holes. Suitable for both rotary and hammer drills, this series is widely used in wall installations, electrical and plumbing projects, anchor hole drilling, and renovation work.
Every piece undergoes strict quality control, including hardness testing, tip alignment inspection, and dimensional verification — ensuring that each bit meets international standards for industrial use.
| Diameter (mm) | Total Length (mm) | Working Length (mm) | Flute Type | Tip Material | Shank Type | Application |
|---|---|---|---|---|---|---|
| 3 | 70 | 40 | U Double Flute | Tungsten Carbide | Straight / SDS | Masonry, Brick |
| 4 | 75 | 45 | U Double Flute | Tungsten Carbide | Straight / SDS | Concrete, Wall |
| 5 | 85 | 50 | U Double Flute | Tungsten Carbide | Straight / SDS | Brick, Cement |
| 6 | 100 | 60 | U Double Flute | Tungsten Carbide | Straight / SDS | Masonry, Block |
| 8 | 110 | 70 | U Double Flute | Tungsten Carbide | Straight / SDS | Brick, Stone |
| 10 | 120 | 80 | U Double Flute | Tungsten Carbide | Straight / SDS | Concrete, Tile |
| 12 | 150 | 90 | U Double Flute | Tungsten Carbide | Straight / SDS | Masonry, Concrete |
| 14 | 160 | 100 | U Double Flute | Tungsten Carbide | Straight / SDS | Stone, Block |
Construction, renovation, and installation projects
Drilling wall holes for anchors, plugs, and fasteners
Electrical and plumbing pipe passages
Suitable for rotary drills, impact drills, and hammer drills
Widely used in bricklaying, tile fixing, HVAC installation, and interior decoration
U Double Flute Design for efficient chip evacuation and lower heat buildup
Carbide-tipped head offers long service life and faster penetration
Precision-ground body ensures smooth drilling and stable rotation
Heat-treated steel shank resists bending and wear
Compatible with multiple drill types for versatile operation
Available in 3–14mm sizes to meet all masonry drilling needs
Q1: Can it drill through reinforced concrete?
A1: Yes, the carbide tip can penetrate mild reinforcement, but for heavy rebar, use SDS-Plus hammer bits.
Q2: What’s the best speed for masonry drilling?
A2: 800–1500 RPM depending on material hardness and drill type.
Q3: Can I use these bits on both hand drills and impact drills?
A3: Yes, suitable for both, especially effective on rotary and percussion drills.
Video
Video
