Perfect for all experience levels. Clean with a swab and/or liquid dunk. Cover the top with a marble/plug or use a bubble cap. - 25mm outside diameter. - 45mm depth. - Angled holes drilled for superior vortex capability. - Beveled edge. - Comes with a pair of 5mm ruby pearls. - High quality sturdy weld between the stem and bucket. - Made with GE214 quartz.