Fits for: Cars, Trucks, Van, Caravans, Vehicle seat Specifications: Material:Metal&ABS&PU Color:Black Placement on vehicle:Left Adjustable range:0-120 degree Features: *Installation suggestion 1.Open the carton,and please check all the items. 2.Open the cover of the seat back. 3.please sit on your seat and make the mark on the position where is the most comfortable to you. 4.drill two holes on the mark you have made. 5.fix the armrest mount to your seat by screw given. 6.open a little hole on the sponge, then take the axis out of the sponge. 7.As for the cover, it is the same with last step. .