The Ritchey tool is great, especially when you need to take something with you. They also will be making a 4N-m model available soon (designed for the clamp on their breakaway bikes, but maybe you have other stuff needs 4N-m which is like 35 in. lbs.?).

I also made an adapter so my Ritchey keys will work on bolts that take 5mm wrenches as well. (took a 5mm allen socket and JB Welded a bottle cage screw in where the ratchet would normally go!). I had an ITM stem that had 5mm bolt heads, and also the cable clamps on derailleurs take 5mm and between 4N-m and 5N-m is sufficient for those.