Based on this product's specifications, here are some alternatives and similar models
Heat-Shrink Sleeve NEO tools 63 mm (model 21-017)
Summary description:
NEO tools heat-shrink sleeve, 63 mm diameter, model 21-017. Designed to provide insulation and mechanical protection for cables and joints, this heat-shrink sleeve contracts when heated to form a tight, protective covering. Suitable for electrical insulation, cable repair and sealing applications where a 63 mm sleeve is required.