16PCS 8M 10M Damaged Heater Glow Plug Removal Remover Extractor Tools Set Kit

Choose the tool No.9, there are a hex 12mm bolt and 30mm hex nut and a cone center tool. Screw the No.12 bolt(1/4”-28 UNF Hex 9mm) into the hex 12mm spindle and use a 9mm spanner to tighter the No.12 bolt.

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