... 3.long life performace. 4.ISO9001:2008. Red sheave pulley block More pictures for the wheel( real product same as pics ... ):Prducts name Red sheave pulley blockBrand nameweite or OEMComponentsnylon pulley, 6204RS bearing and inner plastic ring Sizepulley ... ODM, the color , size and material of "Red sheave pulley block" can be optional according to the customers' requirments, please provide ...