30-511 - Multi-Gauge Single and Double Wrap Rivet
Fits 7/32" Double Wrap Hole
Fits 15/64" Single Wrap Hole
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I believe the instructions call for punching or drilling a 3/16" hole into the vinyl strap ends but I defy anyone to get these 30-511 rivets through a 3/16" hole. I had to drill 7/32" holes and even that was a struggle. A 1/4" hole works but may be too big for a secure fit.