The PCB dedicated satellite shaft is fixed on the pcb circuit board, not on the steel plate, nor is it a . The transparent satellite shaft is designed to be relatively , so it will not loosen when used. Because of compactness, the bounce is particularly obvious. Installation : 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 and refueled. It is more perfect to use! colour: black Material: plastic + metal Package Contents: 1 * 6.25X Satellite Axis 4 * 2X Satellite Axis Note: The transparent satellite axis hatch is relatively tight at first, so when you take the keycap, 't 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 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.