Excellent image contrast. High opacity minimizes show-through. Adds extra snap to everyday copies and high volume runs, at an affordable price. Works great on all types of office machines. 99.99% JAM-FREE? guarantee. ColorLok? technology for bolder blacks, brighter colors and faster drying. This product was made from wood that came from a certified managed forest. Size: 2.1 cm x 2.97 cm; Paper Color(s): White; Paper Weight: 20 lb; Sheets Per Unit: 500.