Hana ʻia ʻo Nylon Sheave me ka MC nylon, ka mea i hana nui ʻia i ka mea caprolactam ma ka hoʻomehana ʻana, ka hoʻoheheʻe ʻana, ka hoʻolei ʻana a me ka hoʻoheheʻe thermoplastic.ʻO ka Aluminum Wheel Rubber Coated ka ikaika kiʻekiʻe, ke kaumaha māmā, ke kūpaʻa a me ka pale ʻana i ka corrosion.Nui ka haawe o ka pulley.