These lepo pololeispur gears hoʻohana ʻia no nā mea hoʻoemi cylindrical,pili i nā mea hoʻoikaika kino waho . He lepo lākou, kiʻekiʻe pololei pololei ISO6-7 .Material: 20MnCr5 me ka wela mālama carburizing, ʻo 58-62HRC ka paʻakikī. ʻO ke kaʻina hana ʻāina e liʻiliʻi ai ka walaʻau a hoʻonui i ke ola o nā gears.