In this quick shop tip, I show how I stop guessing which hex key fits a tiny set screw on my machine. I remove the screw, ...

If you need pro tools, you won't regret buying these Forty quid is a lot to pay for Allen keys, but you do get lots: 2, 2.5, 3, 4, 5, 5.5, 6, 8, 10 and 12mm, all with hardened ball ends and T-bar ...