I bought a D1 Pro all in one package that comes with a “mini material kit”.  The materials are unlabeled and there is no guide or even list of what they are included.   Is there a guide or list somewhere?  For example, what kind of wood are the two pieces?  What are the clear discs?  What are the two pieces of metal?  What's the red stuff in the little box? Whats the beige papery piece with a green patch surrounded by yellow?  What is the flexible gray rectangle?