Pin

"Pins Bloons in place for a short time when struck."

- BTD6 description

 is the 2nd upgrade of Path 3 for the Engineer Monkey. It allows the Engineer to pin down all affected bloons for ~2.0s, similar to a stun. This pinning effect cannot affect Ceramic Bloons. It costs $220 on Medium.

Tips

 * When further upgraded to Double Gun, it become quite useful against normal bloons.
 * It is best not used after Round 81, as Super Ceramics are generally the only non-MOAB-class bloons that appear on those rounds.