Crosman bulk fill adapters

These are NOS that were supplied with the Crosman Skanaker pistol. I only have two left and the asking price is for one only. They thread on to 20lb bulk Co2 tanks that you can purchase from your local hydroponic store. This allows you to fill the smaller Crosman bottles used during the 50’s for their model 111,112,113,114 ect. series and most other bulk fill Co2 guns. Shipping is included in the asking price.