Most Adjustable dumbbells carry approx 50 lbs, with certain exceptions carrying over 100 lbs for the advanced and professional athlete. (aimworkout.com)
There are certain exceptions for guests, but they are limited in scope. (effectivecoverage.com)
Like IRAs, there are rules and restrictions for funding and withdrawing from a 401 (k) account (although certain exceptions apply). (valuepenguin.com)