This Pneu Dart Seal Repair Kit is made for the 179B pistol and 176B rifle. A parts list and picture is included in the owner's manual of the rifles and pistols.
Manual for 176B, 178B, 179B, 190B
Manual for X-Caliber Rifle: https://www.pneudart.com/wp-content/themes/pneudart/assets/docs/pneudart-manual-projector-xcaliber-2017.pdf
Parts for 178B Air Rifle: Pneu Dart 178B Parts List
Parts for 190B Air Pistol: Pneu Dart 190B Parts List