Return address labels (basic format, 80 per page, works with Avery 5167)
AVERY Zweckform 6251REV-10 Square Labels (350 Adhesive Labels, 35 x 35 mm on A4, QR Code Stickers for Printing, Removable Without Residue, Self-Adhesive QR Code Labels), 10 Sheets, White : Amazon.co.uk: Stationery
Avery Multipurpose Labels Laser Copier Inkjet 24 per Sheet 70x36mm White Ref 3475 [2400 Labels] - Paper Supplies - Labels - Copier Labels - 026723