Our Slim Twinz look like a pair of side-by-side exhaust tips, which give the car a more custom stock looking exhaust system. These tips were designed to add concours winning looks to any electric R/C vehicle. Yes, we said electric! These are NOT working exhaust tips. They are merely for appearance. The tip screws on to a 1/8” thick, mock black, round muffler that has an offset tab for the entire system to be mounted to the body using double-sided foam tape or with a screw.