JEGS 81830 external thread repair tool eliminates cross-threading and does away with the need for thread dies. Positioning in the direction of rotation, the tool's adjuster knob, located at the base of the handle, is turned in a clockwise rotation until the teeth engage the threads at the bottom of the fastener or nut, then rotate counter-clockwise for right-hand or clockwise for left-hand threads.

Features:

• One tool can restore many thread sizes in SAE or Metric, without the need for calibration
• Mechanism automatically chases good threads to repair damage
• Size range: 
  • SAE: 5/32 in. - 3/4 in.
  • Metric: 4 mm - 19 mm