curly_haired_boyThese surprised me; I handled the samples here in the office with great interest and a healthy dose of skepticism...they are SHARP and razor thin! Carbon fiber is not known for edge retention, but these aren't really meant for opening boxes and other daily tasks anyway - more of an emergency blade. For those wanting info about intended uses and sharpening, here's a good thread: http://www.bladeforums.com/forums/showthread.php/909988-carbon-fiber-bladed-knife-and-sharpening