KaVo MASTERtorque - Very powerful. Very quiet. Unparalleled comfort. · DST, Direct Stop Technology: – Safe, drill stops in less than a second · Hygienic, no back suction · Powerful, 20% more power, 23 W · Very quiet, 57 dB(A) Very powerful. Very quiet. Unparalleled comfort. KaVo MASTERtorque · DST, Direct Stop Technology– safe, drill stops in less than a second – Hygienic, no back suction · Powerful20% more power, 23 W · Quiet 57 dB(A) · Excellent visibility, redesigned spray.