Segmented design Compatible with traditional MATX, ITX and long PSU bracket cases, it can fulfill users various needs, Support from 0.77 - 1.12 inch / 19.5 - 28.5mm length Tool-less DesignJust twist the screw up and lock the Locking Nut, it will work stably Strong & Stable Full aluminum graphic card holder provides strong support and stand for decades Simple Installation The magnet hidden in the base is designed for easy installation and more stable standing in the chassis, Rubber Pad on the top, no damage to the graphics card