After a lot of work, here is my Ultimate T-Handle Torx Key set, designed in 8 common sizes (T10, T15, T20, T25, T30, T40, T45 and T50)

• Stand available here : https://makerworld.com/en/models/78304
• Other T-Handle Sets : https://makerworld.com/en/u/3864875302/collections/801642

Print in place, no glue required, handles knurling gives a nice feeling in the hand.

It's made to be tight, to avoid the key to move, it should be easy to assemble, but if it is a little hard to screw (example with coated keys, which is a little bigger), a drop of grease or oil on the thread could help.

There is 2 handle sizes : One small for allen key from T10 to T25 and a large for T30 to T50

Give your feedback and post your makes, enjoy!

PS : Feel free to ask other sizes