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The back-tap's patented collapsible design allows it to engage be placed through the spark plug hole and into the chamber. A mandrel is then drawn
for Spark Plug Thread Hole Repair Tools Metal M12X1.25 Inserts
Powerbuilt 640811 14mm Back-Tap Thread Repair Tool, Thread Repair
14 Millimeter Back-Tap Thread Repair Tool
Sealey MS003 Reverse Action Spark Plug Thread Chaser, 14mm, Red
Back-Tap's patented collapsible design allows it to engage be placed through the spark plug hole and into the chamber The Back tap repairs the damaged
Powerbuilt 14mm Back Tap Thread Repair Tool - 640811
Powerbuilt 640811 14mm Back-Tap Thread Repair Tool
18mm Back Tap Thread Straightening Repair Tool Tools Spark Plugs
1pc High Quality Powerbuilt 14mm Back-Tap Thread Repair Automotive
POWERBUILT 14MM BACK Tap Thread Repair Tool - 640811 £52.56
S3 Cross threaded spark plug - thread cleaned - E-Type - Jag
Back Tap Thread Repair Tool Threads for Spark Plug