its a 1 pc. mold that lays flat on the table. It is made of soft resin.The worm will have a flat side on it. It is a very good mold to start with.. for $ 8.80 thats cheap.. Aluminum 2 pc molds make a nicer worm but are very costly. apx. $ 100.00.
you also will need...
plastic,,,, coloring,,,,,salt,,,glitter...and some other stuff and its all avail from L.C. @ the link you posted.