You are correct on the order from left to right, 3-1-2
The bit is SAE 1/16
I have an older kit from harbor freight that has the bit and even though it is not listed I think it is in this set.
https://www.harborfreight.com/security-bit-set-with-case-100-pc-68457.html
But again you can use the small torx as you do not want to torque down anyway or will crack the 'end'.
If it already cracked I have a set of 'covers' for the ends that stop the expansion and allow you to use the wheel without having to buy new ones.