Keep threads sharp and clean to prevent power transmission components from shifting on shafts and spindles. To maintain strong connections, repair worn or damaged threads as well as clear built-up locking compound. Don’t risk damaging threads further with an inferior quality die. Our dies are machined in the U.S. to precise dimensions for a perfect thread profile. They are sized according to the American Bearing Manufacturer's Association (ABMA). Turn dies with a standard adjustable wrench.