These are life size vertabrae, included are Atlas, Axis C3, C4, C5, C6, C7
They come in bone white (more white than the full skeletons and are great for display purposes they are made from non toxic material and you can choose to have them embossed with the names for no extra charge, size each average around 6 inches in length depending on which bone (when you buy the whole set you get a saving of one bone if you were to buy them seperately)