SpecificationsDiameter/Pitch13*4.4inch(330.2mm*111.8mm)WorkingTemp-40ºC~65ºCWeigh(Singlepropeller)14.2gStorageTemp-10ºC~50ºCMaterialCF+EpoxyStorageHumidity<85%SurfaceTreatmentPolishedOptimumRPM5000-8000RPM/minPropellertype2blades-intergratedThrustLimitation4.5kgWarning(1)Pleasemakesurethatscrewsofcoverplatesandpropellersaremountedproperly(2)Doublecheckthatpropellersareflawless,otherwise,pleasereplacethembeforeflight(3)Fall-offorequivalentimpacttopropellerswillleadtodefromationorcracks,inthiscase,youwillneedreplacethem(4)NEVERaddforceontothepropellersordecomposethepropellers,Anydecompositionwillresultinsafetyissues(5)Forsafety,pleasestayawayfromthespinningpropellers,Specialattentionshouldbepaidtowhenusingpropellers(6)Pleasekeepthepropellersawayfromhostileenvironmentscontainingcorrosivegases,andmaintainstrictcompliaccewithstoragetemperatureandhumidityrequirements,especiallywhenitcomestolong-timestorage