Actually, it might not quite believe that these small particles in the Egrip function. And work well !!! With the original evaporator heads I had no fun so that the Egrip lay more in the corner and I wanted to check off as bad buy. After I read here, I was curious about the reviews. And my curiosity was rewarded. Those things can really 20W from. A very strong buy recommendation. 100% fit !!! Class and the very fast delivery is also very commendable. Thanks