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What’s the Difference Between SDS Plus and SDS Max Bits?

While SDS and SDS-Top bits are much less common and SDS-TE-S bits are mostly for chiseling and demolition applications, SDS Plus and SDS Max are probably why you’re here. So what’s the difference?

Physically there are size differences in the masonry bits. SDS Plus have a 10mm shank, while the SDS Max has an 18mm. This means that SDS Max bits have an increased capability for tougher masonry work, withstanding more torque and force.

What’s the Difference Between SDS Plus and SDS Max Bits

The SDS Plus range is shorter in length and is tailored to lighter duty work and smaller diameter holes. Don’t relegate them to a household duty bit. Sometimes you will need to use an SDS Plus bit when the job doesn’t demand a larger hole or when you’re working close to the edge. Especially when working close to the edge, a smaller, less powerful drill is preferable because it reduces the risk of chipping off a piece of concrete from an outside edge.

You’ll find SDS Max have much longer lengths for deeper embedment. There is some overlap between the two but SDS Max are generally designed for more demanding, deeper drilling applications.

The SDS-Max variation has been created to have an improved torsional strength which means that it can be driven at higher speeds and still maintain its force without breaking. When drilling into concrete, bits will inevitably encounter more resistance due to rebar and aggregate that are densely packed in. This is where having a higher torque and increased force will save you time.

A versatile drill bit, you would use a SDS Max bit when you have a larger stud that needs to be embedded deep or when drilling through thicker substrates. For example, when you have to drill through a wall for a conduit or wiring.

When you’re buying masonry bits, consider the different types that are available and look for one that fits your application. Don’t just go buy one because it’s cheaper.

6 Piece Carbide Tipped Masonry Drill Bit Set SDS Plus

5-Piece SDS-Plus Rotary Hammer Bit Set

4 Cutter Sds Plus Rotary Hammer Drill Bit Set, 8 Pcs

6 Pcs Concrete, Brick, Tile Rotary Hammer Drill Bits SDS Plus Set

3/8″ X 24″ SDS Plus Hammer Bit Right Hand

3/4″ X 39″ SDS-Plus 4-Cut Tip Hammer Bit Drill Bit

5/8″ X 39″ Bright Finish SDS Plus 4 Flutes Drill Bit Hammer Bit