Specifications: Tack index compatible with handwriting, inkjet printers, and title brains. Material: Normal paper: Paper thickness: Approx. 0.05 inches (0.14 mm); Body size: Label dimensions: 1.1 x 1.3 inches (27 x 34 mm); Sheet dimensions: Postcard size: 5.8 x 3.9 inches (148 x 100 mm); Quantity: 90 sheets (9 sheets x 10 sheets). Strong adhesive type.