Abstract: A pneumatic wire stripping machine has wire clamping jaws and insulation cutting jaws. The respective jaws are operated by respective pneumatic cylinders. Additionally, there is a third pneumatic cylinder for moving the cutting jaws lengthwise relative to the clamping jaws so as to strip insulation from one end of the wire. A sequence control valve is provided for ensuring that the stripping cylinder only operates after the wire has been properly clamped and the insulation cut. Further, there may be provided, a twisting jaw arrangement for twisting the wire as it is stripped.