Professional SDS Masonry Drill Bit 1/4"x160L (7.4 mm AF)
- Engineered for 5,000 PSI High-Strength Concrete: Optimized for high-density structural walls, effortlessly tackling tough surfaces that standard bits struggle to break through.
- High-Efficiency Rapid Penetration: Combines a premium tungsten carbide tip with optimized spiral flutes to reduce friction and maximize drilling speed.
- Extended Service Life: Built to deliver a lifespan of over 200 holes under normal operating conditions, offering exceptional durability and value.
- Precise Fit & Broad Compatibility: Standard SDS-plus shank design (1/4" x 160L / 7.4 mm AF) ensures a secure, stable fit with major rotary hammer brands.
I. Product Specifications
- Product Name: Professional SDS Masonry Drill Bit
- Size: 1/4" (6.35 mm) x 160 mm Total Length (7.4 mm AF / Across Flats)
- Dimensional Details:
- Total Length: 160 mm
- Working Length (Flute Length): 80 mm
- Shank Dimension: 7.4 mm Across Flats (AF)
- Shank Type: SDS-plus standard four-groove shank, perfectly compatible with standard rotary hammers.
- Suitable Materials: Designed for high-density concrete, reinforced structures, bricks, stone, and masonry.
II. Materials & Engineering
- Premium Alloy Steel Body (High-Toughness Anti-Vibration Structure):
- Crafted from high-grade alloy steel and precision-engineered using advanced heat treatment (quenching and tempering).
- Features exceptional torsional strength and shock absorption, reducing body bending, fracturing, or metal fatigue during high-impact operation.
- Premium Carbide Tip (Extreme Wear Resistance & Cutting Power):
- Features a high-grade micro-grain tungsten carbide tip sintered under high temperature and pressure.
- Delivers superior hardness and wear resistance, maintaining a sharp cutting edge and resisting chipping when drilling into hard concrete.
III. Key Features
- Engineered for High-PSI Concrete (Up to 5,000 PSI): Specially optimized for high-density structural concrete and tough wall surfaces, offering smooth and effortless penetration.
- High-Efficiency Rapid Penetration & Flute Design:
- Optimized spiral flute geometry rapidly evacuates concrete dust and debris, reducing friction and maximizing drilling speed.
- Extended Service Life: Durable tungsten carbide construction delivers high cost-efficiency and consistent long-term performance.
IV. Special Clearance Notice
- Reason for Clearance: This lot was originally produced for export orders, but due to a factory typing/printing label error on the packaging, it could not be shipped out as planned.
- Guaranteed Quality: The drill bit itself is 100% brand new, fully functional, and defect-free. It meets all professional grade and performance standards.
- Limited Quantity: Clearance stock available at a special discounted price while supplies last!
V. Usage & Maintenance Guide
- Proper Usage:
- Verify Fit: Ensure your tool uses an SDS-plus chuck system and lock the bit securely before operation.
- Vertical Pressure: Keep the drill bit strictly perpendicular (90°) to the target surface. Apply steady, direct pressure without bending laterally.
- Cooling Intervals: During prolonged deep-hole drilling in high-strength concrete, pull the bit out periodically to clear dust and allow it to cool down, protecting the carbide tip.
- Daily Maintenance:
- Clear Residue: Clean concrete dust from the body and spiral flutes after each use.
- Rust Prevention: Apply a light coat of protective anti-rust oil and store the tool in a dry, ventilated area.
