These vents are concept from the Nismo GT-R carbon fendr vents. They are re shape to fit perfect on stock 370Z fenders. The original GT-R vents will not fit on stock 370Z fenders, since shape is different. These are made of 3K cross weave carbon with black mashes nets. You need to cut a hole with our provided template to fit them in. You can either double side tape them on or screw on. They are sold as a set of left and right.