Dewalt DT6671 Extreme Masonry Drill Bit 4 x 75mm

This DEWALT Extreme Masonry Drill Bit is a 4 mm diameter tool designed for high-performance drilling across a range of materials. It is described as durable and precise, with efficiency improvements for both professional and DIY projects. The bit is specified with a 75 mm overall length and a 50 mm working length, and is compatible with standard power drills and rotary tools. It supports drilling in materials including concrete, brick, stone, tiles, light concrete, metal, and wood, and is suited for applications such as drilling anchors, plastic plugs, fixings, and pipework clearance holes. The cutting performance is enhanced by features such as optimum carbide grade, a unique tip design to reduce walking, an optimised milled flute for fast drilling, and copper brazing to withstand high temperatures. The bit is noted to last up to 2 times longer and to deliver up to 50% more holes per charge on a cordless drill compared with a standard masonry bit.

Features and specifications

Diameter: 4 mm. Overall length: 75 mm. Working length: 50 mm. Compatible with standard power drills and rotary tools. Suitable for masonry, brick, stone, tiles, light concrete, concrete, metal, and wood. Applications include drilling anchors, plastic plugs, fixings, and pipework clearance holes. Optimum carbide grade maximises durability. Unique tip design provides efficient drilling action and reduced walking for greater accuracy. Optimised milled flute offers fast drilling. Copper brazing withstands high temperatures. Lasts up to 2 times longer and delivers up to 50% more holes per charge on cordless drills than standard masonry bits.

Usage

Install the drill bit into the chuck and tighten securely. Ensure the drill is set to the appropriate speed for the material being drilled. Apply steady pressure during drilling for optimal results. Use cooling or lubrication when drilling hard materials to extend drill life. Drill at appropriate speeds to prevent overheating and damage.