Home Help Standard Business Cards 4 Share and earn What is the difference between 3/8" , 1/4" and 1/8" rounded corners? Corey Thompson Content Writer May 8, 2025 1 view Here is a visual of some of the various rounded corners we can produce at 4OVER4.COM. More from Standard Business Cards Can I get a QR code printed on my business cards? Sure. SImply include your QR code in your artwork and we will print it. Do you sell business card holders? Sorry, we do not sell business card holders. How can I order a custom sized business card? How do I set up my files if I have multiple different sets? Back to Standard Business Cards View all Help topics