Universal T handle - Lite edition

This design is remix from "Universal T handle" https://www.thingiverse.com/thing:5037992, the remix of the originate from "T handle" https://www.thingiverse.com/thing:951909

This remix simply strip down 5mm of joint area which still provide suffice strength to secure and turn the hex key, add the guide to keep hex key centered

Another lite version (handle height=12mm) is also provide here for further material saving