Zvigadzirwa zvine girazi fiber uye mineral fiber seyo huru yekusimbisa fiber ine yakagadzikana friction coefficient, pamwe nekusimba kwepamusoro, kupisa kwepamusoro kuramba uye kupfeka kuramba.

Mamiriro ekushandisa uye chiyero chekushandisa chakapamhama, kunyanya kumota dzinorema mumigwagwa yakasiyana siyana uye migwagwa ine zvikomo.

Chigadzirwa chacho chakanyanya kusimba uye chine hupenyu hurefu hwebasa, uye mutengo ndiwo wakanakisa pakati pemhando imwechete yezvigadzirwa