Bikunze kwitwa urunigi rwa 81X bitewe nuburyo bugororotse bwuruhande rwumurongo hamwe nibisanzwe bikoreshwa mugutanga porogaramu.Mubisanzwe, urunigi ruboneka mubikorwa byimbaho n’amashyamba kandi biraboneka hamwe no kuzamura nka "chrome pin" cyangwa uruhande-ruremereye-kuruhande.Urunigi rwimbaraga zacu nyinshi zakozwe mubisobanuro bya ANSI no guhinduranya muburyo hamwe nibindi bicuruzwa, bivuze ko gusimbuza amasoko atari ngombwa.