Shimano have followed FSA into using Torx head chainring bolts on chainsets, and the little star-shaped fixings pop up in new places on a regular basis.
This means there’s a real need for a decent set of Torx keys rather than just the odd one lying about. Could this one from Pedros be just what we’re looking for? This set includes T7, T10, T15, T20, T25, T30 and T40 sizes in a pistol grip style (for added comfort and more power), with long extension shanks for deep-set bolts. The actual tool ends feel accurate and totally secure in use and there’s no sign of them marking or mangling. However the size markings rub off the grey handles really quickly, which makes it hard to work out which one is which at a glance.