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For screwing and unscrewing Sirona tips. The scaler tip remains stuck in the Torque.
The torque is preset, once the force applied to the tip of the scaler reaches the limit, the clutch in the key would slip and could not apply further force to the tip, effectively making the handpiece of the ultrasonic scaler protected. The removed tip is clamped by the key so that it does not fall off.
The key is made of heat-resistant plastic, it is autoclavable up to 135 degrees Celsius.
The key looks like a cylinder, the cylinder encloses the tip, and the tip cannot effectively hurt the hand. On the other hand, the traditional key does not cover the tip.