Specification: Product name: Adjustable Armrests Condition: New Color: Black Quantity: 1 set Type of key component:PU foam,cover plastic frame,metal mounting bracket Adjustable range: 0-120 degree Material: PU,plastic, metal Function: Step-less regulation Size: 39x7.5x9.5cm Insert: iron/ABS Face material: PU integral skin foam Characteristic:adjustable,shock resistance,wear resisting Application: for vehicle seat Installation profile: 1.Open the carton,and please check 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. 8.Fix the armrest to the parts from the outside, and fix the screw. 9.Put on the lid.that's ok. Note: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2.Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm) 3.There Are No Instructions Included In This Kit.Professional Installation Is Highly Recommended! 4.The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding. Package Includes: 2 x adjustable armrests