Ultra pure JGS2 quartz spheres, tooled to optical precision.
Superior heat resistance.
10mm - micro slurper valve and spinner for blenders
12mm - regular slurper valve and spinner for blenders
16mm - smaller slurper tops, small blender top, large slurper valve, large blender spinner
20mm - top for most slurpers/blenders
22mm - top for almost all blenders/slurpers
*Banger in picture not included.