Highlights 15 piece display jar 27mm glass carb cap Borosilicate glass Bubble carb cap Multi-directional airflow spinner design Disclaimer Legal herbal use only, NOT for tobacco. These White Rhino Glass Spinner Carb Caps features a ball shaped body with a spinner airflow design and are made to function with any kind of banger to create a seal and allow concentrates to vaporize faster. Fits bangers and other nails with a 27mm diameter or smaller bucket opening.