Rocket 40x40MM 30x30MM carbon cooling fan cover & M3 * 14mm 4pcs screws RC motor / electric regulating fan protection cover
https://www.vogueparade.com/shopping/EN/200001385/1/1005001658221532/rocket-40x40mm-30x30mm-carbon-cooling-fan-cover-and-m3-14mm-4pcs-screws-rc-motor-electric-regulating-fan-protection-cover//