Up for sale is a repair kit for the horn button on a MK1 Scirocco / Gti early Wolfsburg steering wheel. As you probably already know, the plastic tabs that attach the horn button to the steering wheel are notorious for breaking- especially after 35+ years of usage.
In the instructional photos I use a 4-4.2mm drill bit and a 5x.8 tap. It’s best to drill a pilot hole with a small bit to begin the procedure.