supply of titanium poly axial fenestrated screws ( thoraco lumbar screws ) used for thoracolumbar fixation and stabilization., ( sr ph code 544226 ) titanium poly axial fenestrated screws ( thoraco lumbar screws ) used for thoracolumbar fixation and stabilization in poor / compromised bone quality to treat trauma tumor , and degenerative pathologies .system should have cannulated screws with the addition of at least four fenestrations near the tip. system should have been designed to allow screw insertion through either open or minimally invasive approach. system should have reverse thread technology with sizes 5.5 , 6.5 , 7.5 mm diameter and 30-55mm in length .system should have break off plug mechanism should be compatible with 5.5mm rod . screw should have atleast an angle of not more than 28degree between head and body should have disposable screw driver adapter system . system should be registered with drug controller general of india. system should be iso or bis or fda or ce approved. unit:no