7-inch endurance FPV drone is my new thing. There is one little problem tho: good 7-inch low pitch efficient propellers. The choice is that there is almost no choice at all! The list of 7-inch propellers with a pitch or around 4″ and preferably 2 bladed (efficiency) is as follows:

• Gemfan 7038
• HQProp 7×3.5×3 V1S
• Gemfan FLASH 7042

And I already know that some those above are total crap!