Mine can only be removed when you take the wheel off, they are held in place by three small bolts/screws threaded trough the lip of the cap and as they're tightened they push against the wheel's center ring wall and stay there.. for good. The crest quality is remarkable, it looks like it has a multi-layer laquer, and it has not lost any of its color or luster, no flaking at al..in the six years I've had them. The problem : I don't recall where I bought them. I do remember however that they were stupid expensive , IIRC, around $ 400 for the set. Sheesh, you'd think they were individually hand made by Mr. Cloisonne' himself. [img]style_emoticons/<#EMO_DIR#>/tongue.gif[/img] Or, may be it's Mrs. Coisonne/ ? [img]style_emoticons/<#EMO_DIR#>/unsure.gif[/img]