Fits all 25-30mmmm banger.

This carb cap has been tested for function and will make your terp pearls spin with sufficient suction.

Carb caps act as more than just a lid for your smoke. By creating a vacuum chamber you are lowering the bowling point of your concentrate. A lower boiling point will allow it to turn into smoke at lower temperatures. Carb caps are an essential part of low temp dabbing.