Stay Fresh Lid for NutriBullet by Franzkitchen Make smoothies using your Nutribullet blender of nutrient-rich foods to pack your drinks and juices with the natural vitamins your body craves. Fits all cup sizes of the Nutribullet. Diameter is 4 inches. Fits 600W and 900W. BPA free. Not in manufacturer's packing. Not for Magic Bullet Express. Not for Baby Bullet. One gasket installed on each lid.