The PCB dedicated satellite shaft is fixed on the pcb circuit board, not on the steel plate, nor is it a balance bar.The transparent satellite shaft is designed to be relatively compact, so it will not loosen when used. Because of its compactness, the bounce is particularly obvious.Installation method: Before the satellite shaft is installed on the pcb, it must be tested whether it will jam or not. If the test is good, it needs to be polished and refueled. It is more perfect to use colour: transparent colorMaterial: plastic + metalPackage Contents:1 * 6.25X Satellite Axis4 * 2X Satellite AxisNote: The transparent satellite axis cross hatch is relatively tight at first, so when you take the keycap, dont deadlift it, it will be uprooted. Tell you some tips, shake it left and right, and then use clever force Remove it, so there is no problem.Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.