supply of poly axial screwpoly axial screw,srphc544565-poly axial screw for occipito-cervico-thoracic spinal fixation system .used for occipito cervico thoracic spinal fixation and stabilisation in spine trauma degenera tive and tumor surgeries. should be multiaxial self tapping and self drilling in nature with di straction and compression ability. diameter of screws should be available in 3.5mm to 4.5mm with length from 10-32mm in 2mm increments. should have atleast 30 degree angulation in all directions and atleast 45 degree increased angulation at 3 relief notches. should have buttr ess thread set screw for locking . should be compatible with 3.2/3.5mm titanium or cobalt chr ome rods . should be compatible with torque limiting screw driver for final tightening. syste m should be registered with drug controller general of india. system should be iso or bis or fda or ce approved . equivalent/ similar to gesco/stryker /auxein/matrix /surgiwear . unit:no [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: ma x 8 lacs ] ]