From Amazon
Avery Zweckform L7871 Adhesive Labels 25.4 x 10 MM, 20 Sheets/3780 Labels/White
Conrad Electronic
Avery-Zweckform L7871-20 Adhesive labels (extra strong) 25.4 x 10 mm Paper White 3780 pc(s) Permanent adhesive, Strongly adhesive Inkjet printer, Laser