HQProp 2Pairs 5.1X4.5 8050 8X5 Light Grey (2CW+2CCW) 2-Blades 5.1Inch 8inch PC Props 5mm Shaft for FPV Freestyle Long Range DIY Color:DP5.1X4.5 CW CCW It has multiple protection functions

It has multiple protection functions such as lithium battery voltage protection

-- Dual ball bearings

PC for PC control and firmware upgrade

dual SX1280 (SX1281)

Manual for Meteor75 Pro O4 Brushless Whoop Quadcopter

HQProp 2Pairs 5.1X4.5 8050 8X5 Light Grey (2CW+2CCW) 2-Blades 5.1Inch 8inch PC Props 5mm Shaft for FPV Freestyle Long Range DIY Color:DP5.1X4.5 CW CCW It has multiple protection functionsPropeller Diameter: 8 inch Pitch : 5 Blades 2 Material : Poly Carbonate Weight : 10 g Hub Diameter : 17. 4mm Hub Thickness: 8. 4mm Shaft : 5mm Adaptor Rings : NO Includes 2 x CW HQProp 8X5 propeller 2 x CCW HQProp 8X5 propeller Propeller Diameter: 5. 1 inch Pitch : 4. 5 Blades 2 Material : Poly Carbonate Weight : 3. 38 g Hub Diameter : 13mm Hub Thickness: 7mm Shaft : 5mm Adaptor Rings : NO Includes 2 x CW HQProp 5. 1X4. 5 propeller 2 x CCW HQProp 5.