Auto-Spinner Fully Worked Thick Bottom Quartz Banger w/ Beveled Top 14mm 

Description: The most popular fully worked thick bottom banger and added two precisely machined holes into each side of the banger.  When capped, the holes allow air flow into the cup which creates an intense vortex that will get your pearls spinning ridiculously fast.

Specification: This Banger is 25mm in diameter, beveled cup, and its fully worked so it's all one piece and significantly more durable than most bangers.