The square convoluted tube is used: as an openable, flexible take off point; or for feeding new optical fibre cords to a rack. It consists of two specially prepared convoluted tubes: which clip together and separate to allow access to the optical fibre cords within. The tube attaches using a standard joiner (Part No: TC1279-73) to any 50mm square duct component. Hook and loop (eg Velcro style) fastening straps are used to secure the two tube halves together. This square convoluted tube is typically used with: Break-Out and Drop Off Kit, 50mm Duct (Part No: TC1279-87KIT); Drop Off Assembly, 50mm Square (Part No: TC1279-89A); or Drop Off Kit, 50mm Square (With Ramp Off) (Part No: TC1279- 89KIT); available separately.