300 Double Postage Meter Tapes 4 x 6 Pitney Bowes 612-0 612-7 612-9 620-9 Label Size: 4 x 6 / 300 total tapes per pack / 2 tapes per sheet These tapes make any ink "quick dry" ink / Permanent adhesive ensures labels stay secure High quality and Smudge free OfficeSmartLabels product exceeds the OEM specifications and guaranteed not to harm your printer. This product comparable to Pitney Bowes 612-0, 6120, 612-7, 6127, 620-9