It is also known as micro percussion or soft percussion, is a mechanism built into a drill motor's gearbox that delivers rapid, low-amplitude impacts to the core bit. Unlike conventional hammer drilling, which uses heavy blows to fracture the material, soft percussion uses much smaller, higher-frequency impacts to enhance diamond cutting performance. These impacts help wear away the bond material surrounding the diamonds, exposing fresh, sharp diamond particles and maintaining cutting performance throughout the drilling process. They also help loosen and dislodge drilling debris, allowing a vacuum to extract dust more effectively from the kerf. Soft impact is helpful for dry drilling of brick and is absolutely essential for dry drilling of reinforced concrete, helping maintain cutting performance while improving dust extraction. It can also increase drilling speed in wet applications, particularly when used with compatible diamond core bits.