Premium self-adhesive labels on A4 sheets, permanently adhesive. Perfect for all laser and inkjet printers, copiers, color laser printers, and color copiers. Guaranteed jam-free and high-speed capable due to extra strong special composite, top flatness, and all-around safety edge. Trouble-free printer feed tested and confirmed for laser and inkjet printers. High whiteness and uniform surface for the best printing results in black and color.