SEAyaho Microphone Cap Windscreen Grill Inner Sponge for SM58 SLX24 PGX24 PG58 BETA58A Mic Cover

hi this is a DJ Dutch I bought a nice sure Alex to wireless microphone off eBay for about 40 bucks and even though I don't have the receiver for this thing I thought it would be good to at least have a spare wireless capsule here so it came in and if I look at my you Alex - here take that one off you can see that there is a difference in the size of these capsules I'm not sure if that means that this is original or maybe a fake but I looked at pictures of other Alex twos and they seem to have the same long Capshaw so when I put this one on my working you Alex series turn it on you see the frequency in the back there come up and there is a response when I tap the microphone now if I put the Alex to cartridge on there it doesn't do anything I've checked the website and sure actually says that these heads are interchangeable so I'm suspecting that there is an issue with this cartridge see