Stainless Steel M18 stud extenders (sold individually) that thread over the existing M10 seat mounting studs in the floor on Corvette C5/C6/C7 and provide a raised mounting point above the carpet. Allows for the installation of other parts that also install around the rear seat studs,
such as harness bars with struts mounting to the floor or lap belt bars. Those parts may require slight modification to install over the 18mm stud extender.
To mount a seat normally 4 are required