Questions about iFixit iMac Opening Wheel

Hello hhauk I can't tell you the exact mm number. When I opened the iMac, at first I only gently drove into the adhesive seal of the screen and only in the second or third by rolling further in. You have to use your fingertips and you can tell as soon as the glass comes loose. I had the feeling that I couldn't damage anything in the device with this small, fine plastic "Imac cutter". What was the most important input for me was that when the glass can be loosened, it is first lifted only a few centimetres and the connection from the glass to the housing is neatly unplugged. It is also important that the whole thing is lying down and not opened standing up. Hope this helps you and greetings

No, unfortunately the spare wheels are not included.

No, there are no attachments. At one end is the wheel, at the other end a very fine and soft point. Works very well for opening stuck displays, whether desktop, tablet or mobile.