It wasn't a punch, it was 2 drill-bit sizes. You can accomplish making the small hole relatively easy. I have used a step drill-bit to do the larger one, you can buy them at Lowe's or Home Depot. Heat can be a factor if you're doing this on a freshly painted fender, so be careful. Also, cover over the fender and cowl so no hot bits/shards get on the paint. They can leave little burn marks.