The rounded bottom will force all your dabs to gather in the bottom when heat the concentrates

you can instantly turn your bong or bubbler into a dab rig

SCORCH Torch Edge With Smooth Press Down

So it is great for dabs and small enough to carry around instead of a torch

Opaque Quartz Banger 90 Degree girly bongs The rounded bottom will forceAn opaque quartz banger is a must have dab accessory for dabbing lovers. If you are tired of waiting a long time for your banger to heat up and don't want to pay too much money for quality bangers. You should not miss the quartz banger with opaque bottom, the new trend of dabbing community. Specifications Joint Size: 14mm Male Joint Angle: 90 Degrees Diameter: 25mm Opaque Grid Bottom Category: Quartz Banger