Pop-up gas cap setLow profile pop up design; to replace the standard screw in fuel cap. Installs with a screw in insert that mounts in the tank. In this the pop up gas cap is installed to allow a flush mount; super low profile. The trim ring is self adhesive and give the finished touch. To open cap; just push for the filler cap to come up and screw filler cap open. Gives a good grip so works with or without gloves. Set includes insert; gas cap and trim ring.