Powerbuilt 12mm Back Tap Spark Plug Thread Repair Tool 641148 sold2024 almost all the filament is Style:10KAIC almost all the filament is Compatible (4) Durable hardened steel helps lower running cost especially for long time printing (5) Make it possible to add inductive Z probe and add ABL for some printers need to be upgraded Maintenance: (1) Wipe the print surface before and after a print with isopropyl alcohol to keep the surface clean (2) Make sure that the distance between nozzel and surface is far enough to protect the surface being scratched(3) If printing PETG The largest size in the industry Back Tap's patented collapsible design allows it to engage be placed through the spark plug hole and into the chamberThe Back tap repairs the damaged thread as it is drawn up through the spark plug holeBack Tap 12 millimeter thread straightening tool for spark plug fouled threadsCollapsible design allows it to engage be placed through the spark plug hole and into the chamberExpands the tool's threaded area and threading into the clean threads Read more Read more Back taper 12 millimeter thread straightening tool for motorcycle spark plug fouled threads