I was given a set of Kamasa combination spanners when I was 17. They have had regular and frequent use since then. I genuinely cannot think of a single time when they have not done what they were supposed to do, sometimes ‘in extremis’. I’ll be 50 on Saturday. The spanners will be passed onto Boy No 1 when it is time for me to go.
Stanley seem to go on forever too, as does a King Dick adjustable- it is totally brilliant and utterly bombproof. As are a full set of Bahco adjustables, well almost a full set, the 6 incher has vanished recently- perhaps Boy No 1 wants his inheritance early I wonder.
Halfords Pro- blummin good kit, if the Kamasa stuff ever dies I’d replace it with Halford’s Pro. I have a few duplicates for stuff mislaid and then found later- the finish is really nice, the fit is great and it has a nice heft to it.
By their very nature bike tools do not get a lot of stress so will probably last an exceedingly long time. Buy cheap, buy twice as they say.