Browse our expansive selection of glass-to-glass adapter fittings. Mix and match the fitting size of your bong or dab rig with the help of a glass adapter. Easily transfer from 10mm to 14mm or 18mm and vice versa. A glass adapter can help you transition between different sizes, allowing you to mix and match according to your compliant needs. Whether you need to switch from 10mm to 14mm or 18mm, the adapter can be used reliably and securely.