... pump as vacuum power. @Top cut frequency can attach 2500 CPM, and at the same time, it can carry out mirco ... Vitreous cut: Scope of cut frequency is from 60-2500 CPM, contains 3 continuously adjustable forwards, which are 60-800, 850 ... -1600, 1650-2500 CPM, with instant switching between three preset cut rates. @Vacuum I ...