Here’s another power tool bound to save many a DIYer from a case of carpal tunnel syndrome from too much twisting. The Auto Ratchet from Craftsman lets you tighten and loosen a variety of nuts with the push of a button. The most striking thing about this handy helper is that it has a pass-through design that lets you work on large bolts because they’ll simply slide through the middle of the socket. The ratchet features forward and reverse modes and has a manual mode that locks the socket for that final hand tightening. Available at Craftsman.com; $59.49.