Glass Hand Knuckle Bubbler – Fist Bump Enabled Borosilicate Pipe

Innovative Knuckle Carb for Effortless Control

This brilliantly designed bubbler features an ingenious knuckle carb that enables easy airflow control without the need to cover a hole. Simply bump the knuckles against your hand or any flat surface to carb the pipe for perfect hits. Airflow engages when you release the knuckles. The innovative fist bump carb provides natural, intuitive smoking control. And unlike traditional carbs, you'll never have to struggle covering tiny inconveniently placed holes. Just bump and rip!