Like I said, the Ball Driver will get into areas you cant reach with a standard Allen wrench. If you take care of the tools, they will take care of you.. My dad got 3 years of very hard use out of his Standard sizes before they had to be replaced. Ihave had mine equally as long but have not used them near as much. I expect they will last many more years. RC Ken and Iare of the same mind. Get the Dubro sets, holder or not, they are good tools at a good price.. you wont be sorry.