RJX X-TRON 500 Head Damper Caoutchoucs 6 x 11 x 4mm # X500-8012
Some of the sets I got had cuts in them so they aren't great quality. I also find them far too stiff and slightly too thick. It makes my blade grips too tight, RJX head and Align heads alike. They are nice I guess if you don't mind really stiff blade grips. I suppose once the head is spinning the grips and pushed outwards and the grips should free up. I still prefer the align ones though they are a lot more expensive.