Oil Black Leaf Oil Nail glass
Material: quartz glass
Length: 42mm (measured from low rest)
Diameter: 17 / 7mm
Grind: for SG 19F
Quartz glass which is in comparison with borosilicate glass durably heat-resistant - the heat is kept better and longer. Signs of wear which show with borosilicate glass when heated very hot and used very often are not to be expected as quartz glass shows little thermal expansion and high thermal shock resistance.
Put the nail on the bong, heat the oil pan red hot with a burner, let it cool off for a short time, then put some oil or wax into the pan with the respective tool and take a draw while smoke develops. A suitabel dome or carb cap dabber can be put over the nail to collect the smoke before inhaling.
Attention: The bowl/nail must be heated at the pan only, otherwise the standard grinding can break in cause of the expansion of the material.