Suitable for Most Microphones-- 51mm/2 inch in height, 31mm/ 1.22inch connecting thread. These were made to fit our SM58 dynamic microphones for vocals and other similar microphones! Simply unscrew the old grill, screw on the new one and you have what looks like a brand new microphone. Good Protector for Mic Head-- The screen grills takes the impact and bleeds it away as a screen deformity.These grills are designed to protect your microphone by denting on contact, keeping the components of the microphone safe! Built-in Foam Windscreen-- New replacement microphone grille ball with built-in foam windscreen to reduce wind, breath, pop noises and it's help to absorb moisture so that the capsule doesn't get wet. Meet Your Needs-- You will receive 4 pieces of microphone grille compatible with SM58, in a classic and simple style to fit your demands.The price is low enough it's also worth it to just replace these even if one gets dirty and you otherwise would have had to spend time with cleaner and a toothbrush. Perfect Replacement-- This dent-resistant grille is a perfect replacement for your aged, dinged or dented microphone grille. It may not makes any difference in sound, but they sure make your mic look better.