Genuine Clear Address Label Size: 1-1/8 in. x 3-1/2 in Box: 130 Labels Per Roll, 1 Roll Per Box Used in the following Seiko Smart Label Printers: EZ30, SLP100, SLP120, SLP200, SLP220, SLP240, SLP410, SLP420, SLP430, SLP440, SLP450, SLP620, SLP650, SLP650SE Used in the following Dymo Label Printers: LabelWriter 4XL, LabelWriter 400, LabelWriter 400 Turbo, LabelWriter 450, LabelWriter 450 Duo, LabelWriter 450 Turbo, LabelWriter 450 Twin Turbo Genuine SLP-1RLC Clear Address Labels for Seiko SLP420, SLP-420 Smart Label Printers