Adjustabe AN Wrench
It’s no bigger than your hand, which it shouldn’t be because you don’t want to over tighten your fitting. It comfortably fits in your hand and is easy to hang onto with machined finger grips. It’s adjustable from AN -3 to -12 in a lightweight, compact wrench that can get into most areas. They’re made of durable 6061T6 aluminum to extend the life of your wrench.