IBOP, oo ah ka-hortagga qarxinta gudaha ee darawalka sare, ayaa sidoo kale loo yaqaan 'top drive cock'.Qodista saliidda iyo gaaska, qarxinta waa shil aysan dadku rabin inay ku arkaan goob kasta oo qodista.Sababtoo ah waxay si toos ah u halis gelinaysaa badbaadada shakhsi ahaaneed iyo tan hantida ee shaqaalaha qodista qodista waxayna keenaysaa wasakhowga deegaanka.Caadiyan, dareere cadaadis sare leh (dareere ama gaas), gaar ahaan gaaska dhoobada iyo jayga leh, ayaa laga soo dayn doonaa ceelka ceelka iyadoo xawligeedu aad u sarreeyo, taasoo samaynaysa muuqaal argagax leh oo rashka guuxaya.Sababta shilku waxay ka timaaddaa dareeraha u dhexeeya lakabyada dhagaxyada dhulka hoostiisa mara,