a single unitary unit to remove the tool nose from the universal drive member it is merely necessary to reverse the interconnection process if desired the compression decompression of belleville spring washers 36 could be accomplished with a motor within shank 10 or external to the drive member with equal effect to that of rod like tool 80 such modification does not however depart from the basic inventive concept here involved in an alternate embodiment push ring member 32 and lock ring 34 would be connected together by pins for common rotation and the pitch of the threads between push ring member 32 and nut 40 would be such that it would take only a very limited rotation of the push ring to sufficiently compress the belleville spring washers to disengage the force urging mating engagement between teeth 70 56 in this alternate embodiment the operator would not have to rotate tool nose a relative to universal drive member b to engage disengage the bayonet 60 to the lock ring 34 rather this engagement disengagement would occur automatically with rotation of push ring 32 because of the connected relationship between the push ring member and lock ring as an extension of this alternate embodiment push ring member 32 and lock ring 34 would be constructed.