I do feel I should mention that if you are using either of the two bigger sizes you dont use the smallest stock rubber ring, you use the second smallest. i was hoping that i would recieve many of the ones pictured for my daughter and i to decorate our crocs. With the exception of one laptop and 2 non-smart cell phones, in my personal and professional life since 2004 Ive had nothing but Apple products - computers (both desktop and laptop), iPads, iPods, and my crown jewel: my iPhone. Too many parts and pieces to work on, taking a long time and now as I working on steps 7, the part#5, 6 where it has missing where I can actually put in the right screws as you can see attached pictures. Great for holding two towels. I have played the HTC Vive at Friends houses and they told me that the PS4 VR could not hold up. The outer case is soft rubber, and on the top are the 4 control buttonsOn/Off, Volume +-, Play/PauseI said earlier that this speaker is smaller than the M83, and I own both of them, the M83 has a slight advantage but not much . On top of that, theres no way of reversing the bolt tightening process (I was going to switch out the bolts for personal ones that contain a screwdriver access head so that you can hold the bolt in place on one end while tightening on the other. Like wearing wooden shoes. I am an airline EMB170 pilot.