SDS stands for Slotted Drive System, and these drills are typically used for heavy-duty drilling into materials such as brick, stone, concrete, and other types of masonry. They must be used in conjunction with an SDS chuck. This unique design ensures the drill never slips in the chuck during drilling. Generally, SDS drills come with a clutch system, which prevents the drill from spinning out of your hands if it gets stuck.

These larger diameter SDS drills are used for larger fixings like rawl bolts and for providing the correct diameter holes for chemical resin fittings.