I have made a wrench that can be very easily printed in space, in a short amount of time. My wrench has 7 different size sockets on it. There are 6 hex, and 1 open end on the wrench. I designed it with simple sizes like ½, all the way to 1/16. But it can be modified in the program easily, to match the sizes you need it for. It is a simple and easy tool to make, yet very durable and dependable for any tightening/loosening job you need in space.