Technique Parameter: 1)Rotary speed of motor : ≥15000rpm,discretionary speed 2)The main machine can match many working heads, including drill, oscillating saw, reciprocating saw, etc. 3)Rotary speed of drill :≥650rpm,Drill chuck diameter : ID. 0.6-6mm. 4)Time of swing : ≥15000′/min, range of swing : ≥5º. 5)The frequency of reciprocating saw : ≥15000′/min, reciprocating distance : ≥3.2mm. 6)Voltage is 9.6V, Ni-Cr battery,powerful main engine. 7)The whole machine can be disinfected rapidly by suffocating (system must be used or disinfected below 45°C) It is economical to generic medical institutions.