Vortex Glow IN dark- 2 Pack Bundle or 3 Pack mix. 
Each bundle has 2 tips of the size you choose or the 3 Pack mix which has 1 of each size.
 
Vortex Glass Tips with 7-hole airflow design for smooth, even draws
Glow-in-the-dark finish for visibility in low light
Includes Gluegar and storage tube for added convenience
Helps reduce clogging and improve airflow
Available in 8mm, 10mm, and 12mm sizes
Made from durable, heat-resistant glass
Reusable and easy to clean