IT IS MADE OF:- HEAD PIECE (UNDER MANDIBLE, MASTOID PROCESS, OCCIPUT)- 2 PULLEYS BESIDE THE HEAD PIECE AND BESIDE EACH OTHER- WIRE (ARISES FROM THE 2ND (I.E. LATERAL) PULLEY & PASSES OVER THE UNDER SURFACE OF 2ND PULLEY THEN THE UPPER SURFACE OF 1ST PULLEY THEN JOINS THE SIDE OF THE HEAD PIECE)- MOTOR- SHOULDER BLADE OR JACKET- LONGITUDINAL CONNECTING BAR- TRANSVERSE CONNECTING BAR- BATTERY- CHARGER- ON/OFF BUTTON- COVER- TIMERN.B. THE DIAMETER OF THE 1ST PULLEY IS SMALL WHILE THAT OF THE 2ND IS LARGE TO ACT AS A LEVER TO MULTIPLY THE FORCE THAT IS PRODUCED