The ability to print all the way to the center hub on these professional grade CD-Rs is what diferentiates it from other Taiyo Yuden inkjet CD-recordables. Being hub-printable allows a greater display area for your message or artwork and a truly state-of-the-art look to your finished product. These discs have a white (edge to edge) inkjet top surface, and a blue/green (cyanine) recording surface, with a maximum recording speed of 52x. Taiyo Yuden engineered them specifically for use with direct surface inkjet printers like those made by Primera, Microboards, Rimage, and Epson. It"s packaged in 100 pc tape wrap, and in master cartons of 600 pcs. This product is not designed to work with thermal printers like the Rimage Everest and it is not recommended for screen printing.