Several videos show how to use this plug kit.
The screw was in the center of my Michelin rear tire.
Remove screw.
Ream hole.
Insert pointy bit w/shank.
Unscrew & leave in shank.
Insert plug in gun tip. Lube lightly.
Screw gun and shank together.
Pump handle to push plug through shank and tire until no more movement.
Pull out the tool.
Pull an inch or two on plug to insure seating.
Trim it off and air it up.
"Your father's brother is your uncle!"
The Slime pump aired tire quickly. (comes with
cigar lighter, battery tender, and alligator connections for every kind of voltage hook up; plus pressure gauge pen)
Took longer to read instructions than to fix the tire. See no leaks, will check again in a few hours.
https://www.amazon.com/Stop-Go-1075-Standard-Plugger/dp/B0018EUDHW/ref=sr_1_3?ie=UTF8&qid=1546870426&sr=8-3&keywords=stop+and+go+tire+repair+kitStig