The spool's are machined out of PET with a form tool the bobbin's are brass and copper fused together then it use's a coil friction clutch. on the mold it's a do-it blank cost don't know My friend supplied the blank with a ton of goodie's it'll take 3 month's to try it all and He has apair of form cutter's for the mold as well to keep the ball and mouth round.