Closed Wound Suction Unit Consists of 600 ml bellow unit for greater suction. Siliconised catheters with radioopaque line. Easy to use by one person. Made from non toxic PVC material. SS Needleprovided, commensurate with size of catheters. Sterile, ready for use. Contents: 1.Bellow Unit 2. Connecting Tube with Clamp 3. Curved Needle 4. Perforated