There is only one Super Mag. It holds every title out there. That includes the WORLD and Champion of Champions. It has been the top choice of hunters and contest callers for many years. Tim and Hunter certainly have one on their lanyard. Hunter's is acrylic, but Tim's is hedge. (Tim loves hedge; says it makes the truest, sweetest goose sound.) It has the soft clucks, high pitched honks with great low end all the way. Of course, it is hand tuned by Tim or Hunter Grounds. Tim or Hunter can make any of our calls as easy or as hard to blow as the caller requests. The Triple Crown guts are available in this call upon request; that would an additional $50 added to the price of the call. Made in the USA.