What is an SDS Hammer Drill?
SDS hammer drills were introduced to the market in 1975 by Bosch. SDS stands for Special Direct System. They are similar to normal hammer drills, but have an improved hammer action that allows more powerful hammer blows. You will also need SDS drill bits that are specifically designed for SDS hammer drills, these improve safety by reducing slips, and are more robust than regular bits. Normal hammer drills need to move the whole drill chuck to apply the hammer action. An SDS drill will allow the bit to move inside the chuck, allowing power to be directed more accurately and efficiently, which results in better performance drilling through substances such as concrete.
