The strength exerted to screw the scaler tip is preset. Once the strength reaches the limit, the clutch inside the wrench would skid, could not exert any further strength to the tip, thus effectively protecting the ultrasonic scaler hand piece.
We also have Woodpecker ultrasonic scaler, light cure unit, apex locator, micro motor unit. Welcome to contact with us for complete pricelist.
Audited Supplier 
){kind=link}