Hi 3D pilots.i tried Peak Models ACRO CF PROPELLERS with my 50 cc edge 540.Thats very quality propelller.22x10 or 23 x 10 size is fit for DLE 55 RA.Hover,rolling circle,harrier flying is very good with this propeller.and price is very good for carbon prop.i record a video with this prop.you can see it.if you want to buy you can visit http://www.peakmodel.com