BAOSHISHAN 240W Pearl Drilling Machine Coral Driller Amber Holding Machine Full Set Speed Adjustable 110V Applicable materials: can make aaccurate holing on precious stone as pearl, coral, amber and ornaments components such as gold, silver and copper from 4 - 35mm; Collet of this machine is made from ABS, ABS wear-resistant and smooth surface, which prevent pearlfrom being mangled with marks and scars; This machine is equipped with 9 suits of special collets, which is suitable to the pearl in round or other special shapes; Comes with 0.5 - 1.2mm special tungsten-steel drilling needle for holing pearl, holing depth can be regulated; There is a dust-falling hole at the bottom of clamping fixture table, which can enable this holing machine to hole in batch without cleaning out pearl powder chips regularly, thus ensuring a long-term normal use of the holing machine. Measurement Range: 0-150mm/6 Inch; Accuracy: 0.01mm Unit: mm/inch (onekey) Function: Internal and external measurement, zero setting at any positionT he display window adopts special quartz glass with strong scratch resistance Max Measurement: 10g; Precision: 0.001g; DC:1.5V 2 x AAA batteries(not included) Unit: G, OZ, TL, DWT, CT, GN Funtion: Peeled, cleared and count, with calibration weight After 60 seconds the scale will automatically shut off so do not waste battery Power: 200W, Maximum current: 30A Application: Used for fast welding of platinum, gold, K gold, silver, steel and precision welding of wires like ends of circle, oval buckle, fine wire Adjust the output power according to the wire size,the welding work piece is bright and clean, fast and efficient Bucket diameter: 24cm, Bunghole diameter:20cm, Machine height:30cm Application: Used with all kinds of abrasive polishing stones together to grinding and polishing metal parts, gem, jades, jewelry and handicraft products Special Design: With heavy duty drive and suspension system, as well as additional adjustable amplitude and tough