This is a Team Associated Factory Team .050" Hex Driver Bit. This bit can be used in the Associated Factory Team Aluminum Handle, as well as other tool handles and power screwdrivers that have a 1/4" drive socket.
Tuesday, May 9 2017 (about 3 years ago)
Team Associated Factory Team Hex Driver Bit (.050)
Used it once to tighten a grub screw on a sway bar. Ended up looking a twistie straight away. Way too soft.