Tool with polygonal head for interchangeable bits

A torque transmitting tool set for use in a limited access space comprising in combination:

• a plurality of drive members, each said drive member being integrally formed with a driver distal end and a driver proximate end, and comprising a polygonal male member portion formed at the proximate end and a tool element drive portion formed at the distal end, each male member portion having the same cross dimension and each drive portion having a different cross dimension for engaging a different cross-dimensioned tool element, each male member portion having a height, and a female member comprising a proximate end and a distal end, and having a polygonally shaped torque wrench receiving exterior, said proximate and distal ends of said female member comprising parallel planar surfaces, and being formed with a hole disposed between the parallel planar surfaces, said female member having a height measured between the parallel planar surfaces, said female member hole interchangeably receiving each respective male member portion to provide a height from the proximate end surface of the female member to each driver distal end, wherein with a drive member received in said female member a plane parallel to said planer surfaces bisects the female member wrench receiving exterior and the male member portion of each drive member, and the female member height being no greater than said male member portion height whereby the female member with each respective drive member operably accesses a limited clearance space for transmission of torque.