Planted Universal Aluminum 90-Degree Side Mount (Open Box, Installed)Open Box, has surface imperfections. All Sales are Final. The Planted 90 Degree Steel Side mount bracket is constructed from 1 4 inch thick aluminum, complying with the FIA's required side mount thickness. 90 Degree are ideal for when the width of the sliders is narrower then the width of the seat, allowing the sliders to sit under the seat. The universal design fits competition, side mounting seats from Sparco, Recaro, Racetech, OMP Cobra, Status,