Stores Ref. 22c/68. Chamois backed canvas webbing strips with 2 male press stud fasteners attached. These can be sewn to the sides of a D-type mask to enable its attachment to a B-type helmet. Faint Air Ministry markings and reference numbers. One appears to have a '39 date. Removed from a B-type we have in stock. Not a perfect matched pair (one is wider than the other). Good used condition overall. Stock code H14129.