The Nes Internal Thread Repair Tools, from Anglo American Tools, is a one-hand tool that restores inch or metric, RH or LH fastener threads. Self-adjusting to any pitch and size within range, there's no need for calibration or identifying fastener thread type when using this tool. Automatically chases good thread sections to repair the damaged parts and features hardened cutting blades (HSS). Cutters can remove some burrs.