Silence K4 PRO features an expanded, large-scale Grinding Box (GL-100) compared to the K3 PRO, providing ample space for free hand movement and precise grinding of large models or high-volume dental prosthetics without constraints. The synergy between the enlarged internal chamber and the powerful brushless motor ensures the immediate suction of all dust within the broad workspace, while the 4-stage filtration system—including an ULPA filter—removes 99.9995% of ultra-fine particles to maintain a superior, clean-air environment.