Sneaky Pete says:

'Optimal vaporization' are the key words with the MiniNail Quartz Banger. The MiniNail delivers low and consistent heat to the banger, which then delivers more of your concentrate to you. No 'pooling then cooling' as can happen with a torch; just great vaping with smooth rich flavor. The custom designed 5mm thick quartz base and sturdy quartz walls retain heat beautifully, especially at lower temperatures.

5mm extra thick base for better heat retention, 14mm male connection, includes silicon band for optional fastening.