We have two kinds for sell, one is normal type and the other one is kickstand type screws.
The expansion screw range is developed on the basis of comprehensive studies and is manufactured using entirely automated machines, which are continually monitored by computer. All our orthodontic screws are manufactured from biocompatible stainless steel, the tolerance of the screw thread is in the range of 0.01 mm; The thread surface is completely smooth; Bodies and guided pins are being manufactured with a tolerance ratio of +/0.01 mm and so ensure absolute stability and precision. Expansion screws are always used as the active section of removable appliances: The range includes numerous types in various sizes with variable expansion and different technical properties; Each type is double guided, with a directional arrow to indicate the direction of activation.