The pipe wrench head adapter from Lowell Corp. can be attached to a breaker bar, torque wrench or other tool with a 1/2-inch male drive. The steel wrench weighs 3 1/4 pounds and has 280 ft-lbs torque capacity. Jaws open from 1 1/2 to 5 1/4 inches. When used with a ratchet, the tool’s stop bar prevents unwanted ratcheting during repositioning. 800/456-9355; www.lowellcorp.com.