Experience the convenience of the Horotec MSA07.108 5 Extra Large Reversible Delrin Dies for Closing Back Case (HT-428)! This brilliant set includes 5 Reversible Delrin Dies for closing snap-on case backs, with sizes ranging from 46 x 48 mm to 62 x 65 mm, and a 3mm inner side wall depth. If you own a Bergeon or Horotec thread-on die, this must-have set is the perfect addition to your collection!