Supply Of Minimaly Invasive Cannulated Pedicle Screw Set Of Four Screw And Two Con Necting Rods.any Size Any Length Specification: 1 4mm-7mm Titanium Colour Coded Screws. 2 Should Have Reduction Sleeve For Multilevel Fixation. 3 Should Come With All Instruments Needed For Multi-level Fixation/ Reduction/ Correction Like Reduction Towers. 4 System Should Be Compatible With Na Vigation System.