This stabilizers are only Plate stabilizers which is directly mounted on plate instead of PCB. Fixed on the steel plate or a balance bar. Designed for MX-compatible Plate. The outer casing and parts, specifically made to prevent stripping of the threads. 104 and 108 key keyboards use 1x6.25u and 7x2U. The 87 key keyboard uses 1x6.25u and 4x2U. Type: Plate Mount Stabilizers Types:1and4 Colour:Whiteandpinkandgold Material:Plastic and Metal Package Contents: 1 x 6.25U Satellite Axis 4 x 2U Satellite Axis Only the above package content, other products are not included. Note: Light reflection 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.