Sheldon Black Titanium Nail 18.8
Worked from pure titanium this concentrate nail from Sheldon Black fits all 18.8mm bongs and oil rigs but needs to be used with a vapor dome.
This is an excellent replacement part for the glass nails now being shipped with some dab rigs. GR 2 titanium is exceptionally strong and heat resistant. It is also totally inert even at high temperatures, meaning your dabs will taste better than ever.