2.Ukulingana okujwayelekile kwazo zonke izibambi zebhithi ezijwayelekile namathuluzi wamandla.
3.Ithiphu eqinisiwe yempilo ende kunethiphu ye-bit.ribbed ejwayelekile imelana kufika ku-50% torque ngaphambi kwenani.
4.Insimbi yensimbi ye-Chrome-vanadium-molybdenum noma insimbi yethuluzi le-industrial grade S2 ifuthaniswe ukuze ibe lukhuni ngokwengeziwe ukuze kukhule ukuqina.
5.Ukushisa okulungiselelwe ukumelana nokuphuka nokuguga .Iklanyelwe ngokukhethekile ukunciphisa ukukhumula .
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