He pouaka whakamarumaru kanohi i hangaia e ia ake, na te mea kaore he anga o roto.Ko te roa ko te 140mm, ko te whanui he 102mm, ko te teitei he 11mm.Ko te whakamahinga o tenei hua ko te tono i tetahi aukume ngohengohe nui ki te Negri, katahi ka tuu i te pereti rino kei roto te poaka ki runga hei whakauru.