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Gilashin da ke motsawa a madaidaiciyar layi akan madaidaiciyar hanya na zuwa ga filayen fili.Ana amfani da madaidaicin layi don ƙayyade matsayi na motsi na dangi na jujjuyawar igiya da sauran sassa, don tallafawa ko jagorantar sassan.Babban aiki mai ɗaukar layin layi shine tallafawa injin jujjuya jiki don rage juzu'i na nauyin injina a cikin tsarin watsa kayan aiki.