@alsmoth I bought a precision set from McMaster Carr. It included T5, T6, T7, TPT8, T9 and TPT10. It also has a ton of hex drivers and other precision drivers. It was definitely more $ than ordering online, but I was able to pick up same day rather than waiting for shipping since there's a McMast...
Boo for brass. Beer has a pH of 4-4.2