A square shaft handle composed of screw cap. The matching transmission lock box can be applied to the doors and windows of plastic steel ,UPVC and aluminum alloy.
The base is provided with a screw cap, which can cover the screw thread of the base and increase the appearance;
The handle adopts a cylindrical and square corner design, the overall round happy.
The exposed size of the square shaft can be from 15-55MM in length to match the square shaft and machine wire of different lengths according to the profiles of different thicknesses.