Heavyweight Solid Black Cardstock (8 1/2" x 11") - 50 Sheets Heavyweight Solid Black Cardstock - 80lb Cover (216 gsm) Works great as a backing mount for a photo or invitation! Works with Inkjet or Laser printers but is not recommended unless you have a printer that can print on black stock Measures Letter Size 8 1/2" x 11" Try writing on these with gold or silver metallic markers for a unique look!