Irwin 1870543 Impact Performance 3/16" X 4" Masonry Drill Bit, Carbide Tip

Irwin 1870543 Impact Performance 3/16" X 4" Masonry Drill Bit, Carbide Tip

The Irwin Impact Performance Series 1870543 masonry drill bit measures 3/16" X 4" and is purpose-built for maximum durability and long life when used with impact drivers. This bit features a pressed carbide tip with aggressive cutting angles that delivers fast, clean drilling in masonry materials, along with a one-piece construction that withstands significantly higher torque loads than standard two-piece quick-change bits. A black oxide finish resists corrosion and extends the working life of the bit, while the 1/4" quick-change shank is engineered to work with impact drivers and to reduce slipping when used in standard drill chucks. This bit is designed to deliver consistent, reliable performance on the jobsite for masonry drilling applications.

Key Features

• Trade Size: 3/16" X 4" bit dimensions provide precise sizing for masonry drilling tasks.
• Durable Construction: One-piece construction withstands significantly higher torque loads than standard two-piece quick-change bits, reducing the risk of failure under heavy use.
• Pressed Carbide Tip: An innovative pressed carbide tip with aggressive cutting angles delivers faster drilling and longer bit life in masonry materials.
• Corrosion-Resistant Finish: A black oxide finish resists corrosion and increases the overall life of the bit.
• Quick-Change Shank: The 1/4" quick-change shank is designed to work with impact drivers for fast, secure bit changes.
• Chuck Compatibility: The quick-change shank design also reduces slipping when the bit is used in standard drill chucks, adding versatility across tool types.
• Built for Impact Drivers: Engineered specifically for maximum durability and long life when paired with impact drivers on demanding jobs.

Technical Specifications

• Warranty: NLW
• Claims Needed: No
• Battery Included: No
• Country of Origin: China

Typical Applications

• Masonry Drilling Applications
• Anchor Hole Drilling in Concrete, Brick, or Block
• Use with Impact Drivers
• Use with Standard Drill Chucks
• Professional and DIY Construction Projects

Why Irwin?

Irwin Impact Performance Series masonry bits combine a pressed carbide tip, one-piece construction, and a black oxide finish to deliver dependable performance and long service life. Built to withstand higher torque loads than standard two-piece quick-change bits, this bit is engineered for professionals and DIYers who rely on impact drivers for demanding masonry work. The corrosion-resistant finish and quick-change shank design help ensure consistent performance drilling after drilling, job after job.