For fitting Land Rover Defender L663 Snorkel. If you want to fit a snorkel/raised air intake to your Land Rover Defender L663 then you need a rivet nut tool to complete the job. You insert the tool and rivnut into the hole in your A-pillar and then turn the end nut which 'pulls' on the rivnut to compress it and tighten onto the body - leaving you with a captive nut.
