Amazon.com : PPE Plastic Binding Spiral Coil, 8mm Diameter, 48 Loops, 4:1 Pitch, Color Coil Black, Pack of 100 : Office Products
Amazon.com: JKGHK ABS Plastic Pipe ABS Tube Round Plastic Tube, Suitable for Model Making and Handicraft Decoration, Length is 500 mm/19.8inch,Diameter:8mm(10pcs) : Industrial & Scientific