in an apparatus that includes a head , spindle , and a handle , the handle is rotatably fastened to the head by the spindle . the handle and head mate at an interface . the apparatus further includes a head axial bore offset from the spindle and configured to occupy a portion of the head and a handle axial bore offset from the spindle and configured to occupy a portion of the handle , the handle axial bore being configured to receive a torque limiting insert , wherein in response to the head being at a first rotational conformation relative to the handle , the head axial bore and handle axial bore is disposed in cooperative alignment to allow the torque limiting insert to transect the interface and enter the head axial bore . the head and the handle are rotationally coupled via the torque limiting insert . the head and the handle are rotationally uncoupled in response to a shear force being applied across the interface that exceeds a shear limit for the torque limiting insert .