Although this windshield is designed to fit the AKG 4000 series, it will also fit other large condenser microphones. I have it installed on a Rode NT-USB and it is an excellent fit - not too tight so the foam is stretched, but not too slack so it falls off when the mic is used facing down. The foam is of the same smooth appearance and quality as offered by others (such as Canford Audio's own windshields) rather than a harder/rougher feel. Together with a pop filter/screen in front of the mic, breath noise is all but eliminated. I also like the dark blue appearance, which looks up-market compared with the usual offerings of brightly coloured windshields. Remember, this is supplied by the same people who make microphones, rather than an after market item, so I can recommend it highly. Well worth the money. I wish AKG offered a slightly smaller version for the C2000 series too!