Rennline's stainless steel folding race hooks install in minutes on any Porsche with factory screw type removable tow hooks. Unlike the aluminum units on the market that are usually advertised as "for decorative purposes only", Rennline's stainless steel tow hooks are precision machined and will stand up to the extreme abuse seen in any race environment. These pulls have a 2" opening as required by most organized race events and screw directly into the factory bumper pull location.