Based on this product's specifications, here are some alternatives and similar models
Staple cartridge HP Q2015A for labelling, white, 1 pc, 51 × 226.1 mm
Summary description:
HP Q2015A staple cartridge designed for labelling applications. Compatible with HP brand devices, supplied in white colour. Pack contains 1 cartridge with package dimensions 51 mm (width) and 226.1 mm (depth). Intended for use in compatible labelling/stapling equipment to secure labels and small material stacks.