This puzzle is based on my Dino Skewb, but has an extra shell required to attach the corner pieces. It moves quite well and is entirely stable.
Buying this model will get you all the plastic parts required to build a Master FTO. You will need to provide your own screws and stickers to finish the puzzle. Alternatively, fully assembled and stickered puzzles are available from me for a small additional fee at email@example.com.