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.