4.0 En4cers Vapor Bubbler with Sherlock Mouthpiece by Freeek!Bringing old with a bit of new is exactly what this 4. 0 E4cer vapor bubbler is all about. Freeek!, known for his brain marbles, exquisite horns, and disc flips crushes this collab with a slime Sherlock that acts as the mouthpiece to the rig. The En4cer also features 4. 0 millies located on the top of the percolator and on the matching dome. Looking closely at the hollow foot base, you will find both signatures of these industry changing artists.