supply of titanium poly axial fenestrated screws,srph544226-titanium poly axial fenestrated screws (thoraco lumbar scre ws)used for thoracolumbar fixation and stabilization in poor/compromised bone q uality to treat trauma tumor ,and degenerative pathologies .system should have c annulated screws with the addition of at least four fenestrations near the tip. sy stem should have been designed to allow screw insertion through either open or minimally invasive approach. system should have reverse thread technology with s izes 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 ang le of not more than 28degree between head and body should have disposable scre w driver adapter system . system should be registered with drug controller gene ral of india. system should be iso or bis or fda or ce approved. unit: no