1,Full range of type. 2,154mm,172mm,200mm,230mm,254mm,300mm 3,Long life time Our Saiwei Motor have pass the Alibaba Supplier Assessment by TUV,the report: http://hzsaiwei.en.alibaba.com/company_profile/trustpass_profile.html?certification_type=intl_assessment1 Drawing2 Size3,OUR COMPANY AND FACTORY4,QUALIFICATION CERTIFICATES Galvanized Grid Motor Part