GRAV – Umbrella Rig



The GRAV Rig is 6″ tall and made on 45mm tubing. Its umbrella perc diffuses vapor through water. The rig comes ready to use with a 14mm female domeless nail made on heat-tolerant quartz, and it works best with approximately 1.5″ of water.

Grav Labs

Grav white logo

6″ in height

Umbrella perc

45 mm diameter thick tubing

14 mm female quartz domeless nail

Fixed umbrella stem

6″ in height


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