这个有意思，另外你那个进料把手能分享下吗

请问应该如何安装

胶圈是多大的

This is the english translation: "This is a device for feeding or retrieving filament, with the purpose of reducing the number of times the filament dry box needs to be opened, in order to keep the filament dry. To use it, simply press the button at the bottom of the device with your index finger, and rotate the wheel at the top with your thumb. Other required accessories: 2x PC4-M6 pneumatic fittings, 4x M2.5 self-tapping screws, 2x rubber o-rings (or you can use other better o-rings if you have them)."