You can now order a much improved version of this puzzle for cheaper at:
https://i.materialise.com/en/shop/item/raptor-skewb
These are the screws you need.
https://www.amazon.com/gp/product/B000NHXOCG (m3 16mm)
The stickers for this puzzle are now available for purchase here:
http://oliverstickers.com/stickers-for-3d-printed-puzzles/seth-holiday-aka-scg-puzzles
This puzzle design combines that of a raptor cube and that of a skewb