Aluminum Channel - LED Aluminum Extrusion 4132-250 U-shape for Flex/hard LED Strip Light White/milk Cover (250cm/98.43inch/8.2feet) Accepts 8mm or 10mm or 12mm strip lighting Inner diameter 30mm/1.18'', 30mm/1.18'' height Can be cut by 1.0 meter,2.5 meter or other you wanted. Highly extrudable and high quality finishing, easily welded or brazed Working with regular LED flex / hard strip light to achieve an emanational neon effect