Avery Labels for Dymo Label Printers, Same Size as Dymo 30323 Labels, 2-1/8" x 4", Roll of 140 Labels (4153) Compatible with Dymo LabelWriter 450 Twin Turbo; 4XL; 450 Duo; 450 Turbo; 450; Seiko Smart Label Printer 440; 450; 650; and Zebra GX420D printers Label rolls are great for UPS and FedEx shipping, bar-coding cases, carton marking, addressing and identification on envelopes and more Avery thermal labels are smudge-free and resist scratches, water, dirt, dust and grease Permanent adhesive sticks and stays put; backed by Avery's hassle free product guarantee Customizable address labels roll is easy to use and delivers a professional look