Masonry drill bits are a type of twist drill bit designed specifically for drilling into brick, stone, and concrete. Unlike standard bits, they feature a softer steel body with tungsten carbide tips brazed onto the cutting edges for durability and strength.

These bits are typically used with a hammer drill, which drives the bit into the material with rapid hammering as it rotates. The hammering breaks up the masonry, while the spiraled flutes clear away the dust. The rotation helps the cutting edges contact fresh material with each impact.

Most hammer drills use SDS-style shanks, which let the bit slide within the chuck during hammering. This design avoids using the entire chuck for the hammering motion, making the process more efficient.

Masonry bits usually range from 3mm to 40mm in diameter. For larger holes, users switch to core drill bits. Extra-long masonry bits—up to 1,000mm (39 inches)—can be used with portable power tools, making them ideal for running plumbing or electrical lines through walls in existing buildings.

Single Masonry Drill Bit or Set of Drill Bits?

Choosing whether to use a single masonry drill bit and a full set depends on how much drilling you’re planning. For quick jobs, you can stick with a couple of common sizes like ¼” and 5/16”, which work well for wall plugs and anchor-type fixings. These sizes are versatile and sufficient for most light tasks.

Drill Bit Sets

If you plan to take on multiple projects around the home, investing in a masonry drill bit set offers better value. A full set gives you flexibility with hole sizes and attachments, making it easier to handle different tasks without running back to the store.

What masonry drill bit do I need?

Always drill slightly smaller than the concrete screw you plan to use. For instance:

• Use a 5/32” bit for a 3/16” screw

• Use a 3/16” bit for a ¼” screw

However, for sleeve or wedge anchors, drill a hole equal to the anchor size.

Alternative to Masonry Drill Bits

Similar to the masonry drill bit is a star drill bit. They are similar in function and appearance to a chisel or hole punch, and are used as a hand powered drill along with a hammer in order to drill into masonry and stone. The cutting edge of a start drill bit consists of multiple blades which are joined in the centre to create a star pattern.

Contact the team at Canberra Diamond Blades for more information regarding masonry drill bits and our range.