I think he is talking about the end mirrors and the signals. To fit both you need an extender/adapter.
I bought it from motowheels
Actually I was talking about the bar end signals and the small round CRG mirrors shone in the jpg on dylzduc's post near the top of the thread. They look good, work well and clamp right onto the bar end signals without any extension or adapter. I didn't want a high mirror or any more length sticking out from my bars. Very happy with it and they make track day prep a lot easier. No rear signals sticking out thanks to the Comp Werkes fender eliminator and tail led signals.