Based on this product's specifications, here are some alternatives and similar models
Staple pins Stickn B.N.T 471405 — 1.8 mm wire, 70 mm leg, 20 mm crown, 215 mm strip, 110 g pack
Summary description:
Stickn B.N.T 471405 staple pins designed for heavy fastening tasks. Wire diameter 1.8 mm, leg length 70 mm and 20 mm crown width, supplied in 215 mm strips; pack weight 110 g. Suitable for use with compatible staplers for upholstery, insulation, packaging or light construction where long legs and a wide crown are required.