Powerbuilt, 14 Millimeter Back-Tap Thread Repair Tool, Model# 640811

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- SAVES THE DAY: The Back tap repairs the damaged thread as it is drawn up through the spark plug hole bringing any debris with it instead of falling into engine cylinder
- PATENTED DESIGN: Collapsible design allows it to engage be placed through the spark plug hole and into the chamber; expands the tool's threaded area and threading into the clean threads drawn up through the plug hole repairing threads as it goes
- TIME SAVER: Repairs fouled and damaged threads without removing cylinder heads; no need for tricky thread inserts
- TOP QUALITY: Made in USA; meets or exceeds ANSI standards; lifetime warranty
- STRONG: Made of heat treated 4118 steel
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