Two hardened steel blades (Rc 58), guided by the existing thread, regroove the damaged area
Adjusts automatically to any thread diameter and pitch
No measuring of thread required
Applicable to all forms of metric or non-metric right hand or left hand threads
All tools come supplied with standard blades
No calibration required
Great for cleaning corrosion from cap screws
CAUTION: Any cutting tool may break or shatter under improper use. Government regulations require use of safety glasses and other appropriate safety equipment at all times in the vicinity of use.