Park Tool is a well known brand. According to their website, they have been making bicycle tools since 1963. I'd prefer to know how someone decides help make matters bicycle tools in 1963, nevertheless it's worked for them, and they've built up a good good reputation for making quality products. You really can't go too wrong with their tools and their products are well-known to be great quality and to last a long time.

I personally have a 2 wheel trailer I bought in 2002 and use quite often