Profile: Mayes and Warwick Ltd. specializes in producing thread and form rolling dies. Lockbolt or blind rivet rolling dies are manufactured for many different varieties ranging from 3 mm diameter to sizes over 30 mm, and can be designed for the die sizes to suit machines. Chasers are available to chase threaded parts having standard threads. The internal thread chaser has its cutting teeth located on a side face. The external thread chaser has its cutting teeth on the end of the shaft. The handle end of the tool shaft tapers to a point.