supply of poly axial pedicle screw for single lock spinal systempoly axial pedicle screw for single lock spinal system, srph544579-poly axial pedicle screw for single lock spinal system - used f or lumbosacral fixation and stabilisation in spine trauma, degenerative .pedicular screws should have dual threaded mechanism and should be compatible with 5.5mm titanium / cobalt chromium rod . screws should be made up of cobalt chromium and available in sizes of 4.5 , 5.5 , 6.5 mm diameter and 25-55mm in length . system should ha ve break off plug mechanism. screw should have an angle of not more than 28 degr ee between the head and body. system should be compatible minimally invasive surgi cal technique and also be used along with fenestrated or / and hydroxyapatite coa ted screws . screws should be colour coded for easy identification. system shoul d be registered with drug controller general of india. system should be iso or bis or fda or ce approved.unit:no