Usage Tips:Product name:adjustable seat armrestAdjustable range:90 DegreeaAdjustable,Shock resistance,Wear-resistance.This comfort armrests stuff with moulded foam and offer you added comfort whilst driving,which are pivoting and adjustable.We supply these as universal but you will need to be creative when it comes to fitting these as there are no specific vehicles or seats they fit so adapter plates may be needed and you may also need to drill some mounting holes.commonly used on Car,for Camper,Motorhomes,for Vans,Boats,Trucks etc.Installation:Open the cover of the seat back.Please sit on your seat and make the mark on the position where is the most comfortable to you.Drill two holes on the mark you have made.Fix the armrest mount to your seat by screw given.Open a little hole on the sponge,then take the axis out of the sponge.As for the cover,it is the same with last step.Fix the armrest to the parts from the outside,and fix the screw.Put on the lid.Colour:BlackMaterial: plastic + PU leatherSize:38x6.5cmPackage Contents:1 x seat armrest(Right)Only the above package content, other products are not included.Note: Light shooting 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.