Worm Drive Spindle

The  purpose of a Worm/Spine Drive Spindle is that should the handpiece 'lock-up', the corkscrew design of the joint disengages the handpiece from the solid drive.

Please state the make of the handpiece that the Worm Drive Spindle is for from the drop- down list above and also the model of the handpice as the Spindles differ depending on whether it is a Tally, Shogun, Focus, Mamba etc..