Very Handy Machine for Drilling pearls. Suitable to Drill Pearls From 2mm up to 20mm. Power Source 220V. Can be used for accurate holing on such precious stone as pearl, coral, amber and ornaments components such as gold, silver, and copper. This is suitable for round pearls. There is a dust-falling hole at the bottom of clamping fixture table, which can enable this holing machine to hole in batch (because a great number of pearl powder will be produced when pearls are holed in batch, working piece inside clamping fixture table is easily blocked) without cleaning out pearl powder chips regularly, thus ensuring a long-term normal use of the holing machine. Control collect and rotation of pearl by using the rotary handle, easy and highly efficient. Designed with power-assisted handle device, saving effort and convenient in use.