We can supply dc brushless fan ,ac fan ,cross flow fan fan guard . With competitive prive and best quality . Detailed descriptions :1. DC FAN or AC FAN Dimensions from 20mm to 254mm2. FAN GUARDS Dimension : YM-03 For 30mm Fan, YM-04 For 40mm Fan, YM-05 For 50mm Fan , YM-06 For 60mm Fan , YM-08 For 80mm Fan, YM-09 For 90mm Fan , YM-12 For 120mm Fan , YM-15 For 150mm Fan3. Bearing type : Duall ball ...