This is a T-handle for an 2,5mm Allen exagon wrench. The 2,5 mm size is the most used on Prusa i3, so I decided to print an handle to make it more confortable to use and not least easier to find among other tools Printed in FlexPLA As other my designs, the metal part is wrapped by the printed model. To do this put a pause in the g_code, then, when print stops, insert the wrench in the receptacle, and restart the printing