Twin wall flue pipe

Twin wall straight pipe. 6 inch internal diameter ,outer diameter 8 inch . Length is 6 inch They join together by clamp system. I have 12 pieces. They are brand new costing €55 euro each. I have one extra twin wall pipe i will throw in for free as its painted black.Two top plates 6 inch also ( does not work with this pipe but may be of some use )€10 each normally €20 .Only interested in selling in one lot .