jefa baƙin ƙarfe murabba'in kada ƙofar bawul
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Na baya: bakin karfe square kada kofa bawul Na gaba: lantarki Bakin karfe high zafin jiki malam buɗe ido damper bawul

An sanya shi a ƙarshen wutsiya na bututun magudanar ruwa, bawul ɗin murɗa yana da aikin hana cikar ruwa na waje. Ƙofar tafawa galibi ta ƙunshi sassa huɗu: wurin zama, farantin bawul, zoben hatimin ruwa da hinge. An raba siffofi zuwa da'ira da murabba'ai.
. Matakan magudanar ruwa: Magudanar ruwa daga rijiyoyin magudanan bututun hayaƙi na asali, babu ƙarin na'urorin magudanar ruwa

| Jiki | Ƙarfin Ƙarfin Ƙarfi/Grey simintin ƙarfe |
| Hukumar | Ƙarfin Ƙarfin Ƙarfi/Grey simintin ƙarfe |
| Hinge | Bakin karfe |
| Bushing | Bakin karfe |
| Pivot Lug | Karfe Karfe |











