stumpy thumb screwdriver

This is one of several small screwdrivers I've been experimenting with printing.Upon testing in PLA, I've found this to be functional, and I'm unable to apply enough torque by hand to damage it.The bits are held in by friction. The hold for the bit has been set to 6.54mm. On my printer, this tolerance seems fine. If you do print one, let me know how you go, I'd like to see how it performs on different printers.