This is a low-priced store brand of business cards for printing. They are hard to break apart after printing and some of the edges are rough. Good enough for casual personal use. The more expensive brands give a better sharper finished product.
I use these cards on a regular basis - perfect solution. I use both a laser and inkjet printer. I make the cards in Adobe Photoshop. Never had any problems! Better value than the mainstream brands but just as good.