Designed specifically for the Cuta Copter EX1 4S to handle wind speeds of 39kph and wind gusts up to 50 kph whilst carrying a 2kg pay load. Constructed from high quality carbon fibre, and these propellers are a step above your average propeller. The Cuta Copter EX-1 4S propellers have an aggressive profile providing the high strength and thrust required to lift 2kg baits whilst drone fishing. Each propellers hub is colour coded in silver and gold making it easy to match the correct propeller to the motor. Simply unscrew the 4 Hub bolts from the damaged propeller and re assemble to the new propeller.