These are original 'mushroom head' wire brushes for the Mk1 M, BREN cleaning rod. The brushes have a threaded brass ferrule for screwing into the end of the Mk1 or Mk1 M wooden rods. The brushes are in unissued condition, although after some 50 years plus in storage, some do have patches of staining from light surface rust where they have got damp in store. British Army part No BE6120. Stock No 17/79.