simple. 2WD/4WD buggy full wall/low profile tire sidewall gluing jigs. Jig is used to evenly spread glue to the sidewall of your front tires to prevent traction rolling during high grip Clay track race events. Full wall and low profile options are made to provide tuning options between sealed high grip Clay tracks and natural Clay tracks. Or used as grip comes up through out the day. Different colors are offered to match cars theme, and pit set up.