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 compactness, the bounce is particularly obvious. Installation : Before the satellite shaft is installed on the pcb, it must be tested whether it will or not. If the test is good, it needs to be and refueled. It is more perfect to ! Suitable for majority for cherry mx type mechanical keyboards Colour:Transparent color Material:Plastic + Metal Package Contents: 7 x 2u Stabilizers 1 x 6.25u Stabilizers Please note it is ONLY Stabilizer here, NOT mechanical keyboards. Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.