Dual Socket Ratchet Wrenches fit the most popular water works fasteners for mechanical joints, flange bolts, repair clamps, service saddles and sleeves. Each wrench also offers a handy switch on the head for safe action reversal. Ratchet wrenches are faster to use than pipe wrenches or adjustable wrenches. Thru-bolt sockets work by letting the bolt pass completely through the socket and arm head. Thru-bolt sockets replace the need for separate deep sockets.