Differences Between Glass, Titanium, and Ceramic Rig Nails
Nails are used in dab rigs and function similarly to bowls. A nail takes your concentrate oil, modifies it, and creates the vapor for you to inhale through your rig. Many forms of nails offer different experiences for the smoker.
The type of nail you should select depends on what will work for your rig, palate, and overall, the kind of dab experience you're seeking out.