Based on this product's specifications, here are some alternatives and similar models
Binding thermal covers ARGO PRESTIGE A4 18 mm black pack of 10 (model 430182)
Summary description:
Thermal binding covers ARGO PRESTIGE for A4 documents, 18 mm spine thickness, black color, pack of 10 (model 430182). Designed for thermal binding machines to create professional-looking booklets, reports and presentations. Suitable for office, school or home use to bind up to the specified spine capacity and protect pages with a leather-like finish.