Abstract: A manually actuated electrical conductor wire insulation cutting and stripping apparatus has an elongated housing adapted to be mounted on a conductor wrapping tool or connected to a pistol grip type handle. The housing supports a wire cut off blade assembly and an insulation cutting and stripping blade assembly which are actuated simultaneously by an elongated shaft extending in and supported by the housing and connected to a manual actuating lever. The insulation cutting and stripping blades are retained on the housing at one end thereof by a removable cover member which permits interchanging insulation cutting and stripping blades without major disassembly of the apparatus. The wire cut off blades are mounted on a movable support member and one of the wire cut off blades retains the other blade in a recess formed in the support member and connected to the shaft for rotation therewith.