... 2.Low nose,low heat,low vibration 3.Quick change grind head without tool 4.Slide type switch 5.CE,RoHS ... precision micro grinder machines.Our products are broadly used in Nail art , Jewelry engraving , Dental grinding , Mould polishing , Wood carving ,Craftwork ... vibration.4.Quick change for grinding system without using auxiliary tool can improve work efficiency greatly.5.Independent power switch ...