The cavity margins are finished precisely that put a great effect on the aesthetic appearance and life span of the restoration of the color of tooth. The margins are leveled evenly with the instrument which is coated with the diamond. It enables the removal of the irregularities like the loosened enamel rods. The complete tactile sensitivity is ensured by using the hand instruments. Without the disturbance of the torque, the power is transmitted while intently maintaining the balance. The fatigue proof working is ensures by these features of device. The application of the instrument is done to the cavity margins in perpendicular direction. The end of the apparatus which is diamond coated conform to the projected edge angle surface. The end which is not coated with diamond allows a guided application while the neighboring tooth is used as a supportive structure.