Suited to intermediate/advanced experience levels. Clean with a swab and/or liquid dunk. Plug the top with a marble as small as 12mm (add on our ruby valve marble for an easy solution) - 80mm length barrel. - Beveled top edge. - Comes in 14/10mm male 90 degree. - Comes with a ruby pillar. - High quality sturdy weld between the stem and bucket. - Made with GE214 quartz.