the white/red props are biela, and a 22x8 is around $55. I do not like the performance of these props, as they load up the motor more than others, and the BME 50 likes to turn up rpms for best performance. My BME 50 performed best on a Menz 22x8 wood prop. If I had one today, I would run a PT Models 22x8, available from troybuilt models.