These propellers are available in clockwise and anti-clockwise versions, and feature a press-fitted metal M8 threaded insert.

This means that the props can be screwed directly onto electric motors with an M6 threaded shaft, and require no further retention.

They are the correct size for the Yuneec Q500 and similar models.

The metal caps feature a 4 mm bore, allowing the propellers to be dynamically balanced before use.