Umbhobho wombhobho luhlobo loxinzelelo, kwaye ulwelo kufuneka lube phantsi koxinzelelo lokusebenza ngesiqhelo. Olu hlobo lwe-accessory lunokuvelisa i-engile emxinwa egcwele-ikhowuni yokutshiza nge-engile yokutshiza malunga ne-20 ° -40 °. Esi sixhobo sixhasa ulwenziwo, nceda unxibelelane nathi.