FPV racer 66mm: These are the largest applicable propellers and provide the most thrust of the selection of propellers offered. Shaft bores are generally deep enough for propellers to seat completely against the motor. These are a great option for most 0820-15 (and slower) motors but may overload faster motors (0820-17+).
66mm overall length and designed for 1.0mm motor shaft.
A set of 4 propellers weights approximately 1.5g
The video below shows how to ensure a propeller is setup to help prevent motor damage. 62 size drill bits are available here.
This video shows how to increase propeller tightness.