This is a set of 8 Mopar nylon nuts. These are exactly like the originals that were used by Chrysler. The dimensions of this nut is 5/8" in length, 1/2" in diameter, snaps into a 9/32" square hole, and accepts either a #8 or #10 screw. Be sure to match your original nuts from your vehicle with the dimensions above. These nuts will replace your missing, brittle, broken, or missing ones on your car. These are the same nuts that I use on my award winning concourse restorations here at Midwest Muscle Car Specialties so buy with confidence.