Ko te tungsten carbide 3 hole slitting blade he taputapu tapahi i hangaia mo te whakamahi i roto i nga momo tono, tae atu ki te tapahi pepa, te tapahi papanga, me etahi atu mahi tapahi tika. Ko te tikanga he mea hanga mai i te koranu tungsten carbide kounga teitei kei roto he huinga o te tungsten, te waro, te vanadium, me etahi atu konganuku e pai ai te mauroa me te mahi tapahi.