Description The 10mm GRAV® Cup Bowl is compatible with any 10mm female joint and features a glass maria around its stem for safe handling. The cup bowl’s limited capacity is designed for use with smaller water pipes and Helix™ pipes. The 14mm GRAV® Cup Bowl is compatible with any 14mm female joint and features a glass maria around its stem for safe handling. The cup bowl’s limited capacity is designed for use with smaller water pipes and Helix™ pipes. The 19mm GRAV® Cup Bowl is compatible with any 19mm female joint and features a glass maria around its stem for safe handling. The cup bowl’s limited capacity is designed for use with smaller water pipes and Helix™ pipes.
