CR80 DAUL side cleaning card size: 3.375 inches/86mm, width: 2.125 inches/54mm, thickness: 0.03 inches/0.711mm (standard credit card thickness, thickness should be suitable for the inside of the card insert machine/card inside Reduce the accumulation of residues without disassembling equipment. It is suitable for most card and card printers to remove dirt, magnetic oxides and emulsions on hidden magnetic and optical sensors. Designed to securely remove all forms of dust accumulated in magnetic and optical reading, it is very good in the chip and brush. CR80 double -sided cleansing card cleaning head cleaning head and entire magnetic trail. Material: plastic colour: White Package Contents: 20 sheet x CR80 Cleaning Card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.