The Peak Ball Cap & Tether is a borosilicate glass carb cap with 360 airflow control. As you inhale, twist the Ball Cap to ensure that your concentrate warms evenly and vaporizes entirely, giving you greater doses and even more taste. It has a tether to keep it safely tied to your chamber. The Glass will not hamper the taste of your flower and you will get the exact taste that you paid for. Also, BuyDeltas is home to the best Dabs and other THC-related products, so hurry up and order from us now.