★The latest addition to the Educational Construction Series' line-up of versatile materials are these white styrene pipes. ★3mm, 5mm and 8mm pipes have inner diameters of 2mm, 3mm and 5mm respectively, and each pipe fits neatly inside its larger sizes, allowing their use in any number of situations. ★Great for customizing your plastic models, design work, and making your own completely original creations - let your imagination run wild!