These Uxcell upholstery nails are great! I got the 11mm ones (head diameter), and the height is 13 mm. I measured them myself and the measurements in the item description are spot on. For people using standard measurements, these are .44 inches head diameter, and .52 inches height. I got a pack of 80 to reupholster a couple of old accent chairs, and they work great! I didn't even have to hammer them in; I just cut and layed my new fabric on the backs and seats of my chairs, pulled the fabric taught (and folded around corners), and pushed these in every few inches, into the wood frames, all the way around. My thumbs were really sore afterwards! But the fabric has stayed put and the upholstery nails look great! They have a classic look and vintage style to them. I absolutely love them! I had a few left over, and I used the rest as tacks for my cork memory board, to hold up photos, notes, letters, etc. I'd highly recommend these! They're pretty, really great quality, easy to use, and won't bend when you hammer/push them in! If you have a more complicated piece of furniture that you're reupholstering, I recommend using staples to go around sharp corners or tricky spots, and then use the upholstery tacks on top of the staples to hide them.
WARNING: 
