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SDS Max Drill Bits

121 products · Drill Bits, Cutters and Inserts

This collection brings together drill bits with an SDS Max shank, the fitting for high-power rotary hammers. They are used to drill concrete, masonry and stone, including large and deep holes. The brands in the range are DeWalt, Milwaukee, SPIT and Unifix.

What you will find

  • Multi-cutter bits: four-cutter, for fast, accurate drilling.
  • Long bits: for deep holes, up to almost one metre overall length.
  • Bits for tunnels and large holes: in carbide.
  • SDS Max systems: bits and accessories compatible with the chuck.

How to choose

The choice starts from the diameter of the hole and the depth required: the usable length must exceed the thickness to be drilled. The material then matters, with reinforced concrete calling for quality bits. Check that the rotary hammer has an SDS Max fitting and is suited to the chosen diameter.

Supplies are on a quotation basis: write or call us stating the intended use, the quantities and the sizes, and we will reply with availability and terms.

How to choose SDS Max bits: diameter and working length
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Frequently asked questions: SDS Max Drill Bits
What are SDS Max drill bits used for?

Bits with an SDS Max shank fit on high-power rotary hammers and are used to drill concrete, masonry and stone, including large, deep holes. The SDS Max shank transmits power from the hammer to the bit. They are used on building sites and in heavy drilling work.

SDS Max or SDS Plus: which fitting do I need?

The SDS Max fitting is larger and sturdier than SDS Plus, designed for more powerful hammers and large-diameter holes. SDS Plus is for lighter hammers. If your hammer has an SDS Max fitting, use SDS Max bits. An SDS Max/SDS Plus adapter also exists, to be checked on the product page before use.

What length of drill bit should I choose for deep holes?

Long bits are for deep holes, and in the catalogue the DeWalt XLR bits are available in different lengths, shown in the product name. For shallower holes shorter bits are enough. Choose the length according to the depth to be reached, with a margin so that the shank does not touch the bottom.

What bit diameter should I choose for wall plugs or pipe runs?

The bit diameter must match the wall plug, cable or pipe you need to fit. In the catalogue the DeWalt XLR bits range from 16 to 42 mm in diameter. Follow the wall plug manufacturer's instructions and check the size shown in the product code before purchase.

What are SDS Max bits with dust extraction used for?

SDS Max bits with dust extraction have a system that collects dust during drilling, useful for health and for keeping the site clean. They must be connected to a suitable vacuum extractor and used with the respiratory protection indicated. Check compatibility and diameter before use.

How do I use a hammer with SDS Max bits safely?

Wear goggles, gloves and ear protection, because the rotary hammer is noisy and transmits vibration. Hold the tool with both hands and do not force the bit, letting it work on its own. With stone and concrete also wear a suitable mask, and clear debris from the hole to avoid overheating.

How do I maintain SDS Max bits?

Check that the cutting edges are not chipped or worn, and replace the bit when drilling becomes slow. Clean the shank and lightly lubricate the fitting before inserting it. Store the bits in a case or in their set, so they do not get damaged by knocking against each other.