... chuck for round, rice shape, size and shape of each pearl shaped C, the machine chuck is made of ABS, ABS ... - # 25MM drilling various size pearls (freshwater pearls, seawater pearls, South Ocean Pearl, Tahitian black pearls, shell beads, coral, amber apply)E, equipped ... frequent dust holes do not have to clean up Jane Pearl powder cutting, to ensure the long-term normal use the ...