Works great with Blade 300x!

At first I was concerned these would be too small, but Blade measures theirs from tip to tip(245mm), and these are measured from hole to tip... total difference is _5mm!

Great value for newer pilots who don't want to pay $40+ for carbon blades, and a much better alternative to stock wooden blades.

I've tried 2 pairs, both were well balanced and survived mild to medium crashes! I got about 100 flights off each pair before the tape underneath which covers the holes was too filed with bug guts and dirt and started to loose balance.

I have been very happy with these on my 300x and you will be too!