Chillum / Round Cup – 18.8mm Joint 10-cm

The Chillum / Round Cup – 18.8mm Joint 10-cm is a precision-crafted borosilicate glass chillum cup bowl for any compatible 18.8mm water pipe or bong. Its round cup bowl sits atop a straight internal chillum that cools and filters each draw for a smoother, cleaner hit while keeping airflow unrestricted. Made from durable, heat-resistant glass with a finely ground joint for an airtight seal, it slides into any standard 18.8mm female joint and wipes clean in seconds. Compact at just 10cm, it balances portability and performance for daily sessions at home or on the go. A reliable upgrade that enhances flavor, reduces harshness, and adds lasting value to your setup—a must-have spare or replacement piece.