Based on this product's specifications, here are some alternatives and similar models
Staples Rapid Tools 40109530, leg length 23 mm, galvanized steel, compatible with Rapid staplers
Summary description:
Rapid Tools 40109530 staples are galvanized steel fasteners with a 23 mm leg length designed for use in compatible Rapid staplers. Made from corrosion-resistant galvanized wire, these staples provide reliable fastening for upholstery, insulation, and general-purpose stapling tasks. Suitable for professional and DIY applications where long leg staples are required.