ball 50 provided between the spindle end face 48 and the recess 26 in the bearing surface 22 to facilitate rotation of the spindle 34 with respect to the handle 10 as illustrated in fig2 the slip clutch 28 the spring 30 and the bushing 32 slip over the spindle 34 in series in a coaxial alignment more particularly referring to fig1 and fig2 the slip clutch 28 is positioned adjacent the bearing surface 22 with each of the grooves 24 supportively receiving corresponding balls 45 in this position one of the notches 42 is seated against i e firmly engages the spindle cross pin 46 the biasing spring 30 is fitted over the spindle to abut against the slip clutch rear face 38 and the bushing 32 is threaded or fit into an open end of the cap 14 to engage and bias the spring 30 against the rear 38 of the slip clutch 28 referring to fig2 in operation the spring 30 normally biases the slip clutch 28 to seat one of the notches 42 against the pin 46 such that the spindle 34 and handle 10 will rotate with one another through the transmission of force via the coupling between the pin.