Yeti is a great microphone from Blue, only its gain adjustment knob is facing the other direction and you can't tell where it is without visual. This design fit around the knob and add a notch that you can feel with your finger to adjust the gain without need to look. Mod is designed to have a slightly larger diameter so it doesn't scratch the original Yeti  knob. You'll need to use a scotch tape around it to tighten and provide soft interface the original knob keeping it in good shape. See image of the final mod fitted on the microphone, I have tab all around but you can add only on two sides. Enjoy!