You should all be advised that this brush is just a standard BRUSH, artists*, lens dusting (I think it says '.... lens dusting and cleaning' in the VAOS cat) and still available in the VAOS system. It's included in most of the optical stores equipment and is an expense item. There were a couple of different shapes/lengths according to the supplier. Sorry to sound like a party pooper and all that and while a bird in the hand is worth two in the bush, bear that in mind.............
* the word artists didn't mean it was used for painting by artists, it means the softness of the bristles!