Brush Blade Coupler for Einhell

I couldn't find any couplers for this Einhell brush cutter model and this blade.
This coupler does its job. I used it in two sessions of one hour and half, without problems.

Never use this coupler without the metal washer. With the heat, the printed plastic could loosen and the blade could come out very dangerous !

Always use it at your own risk, but be careful.