Sigma Surgical Pvt Ltd manufactures Cannnulated Screw Thread. Sigma Surgical Pvt Ltd is an ISO 9001: 2000 certified company. Cannnulated Screw Thread comes in length 25.0 mm to 110.0 mm. They have a variation of 5 mm or 6.5 mm and they are used for Orthopedic Implanting in hospitals and nursing homes.