Based on this product's specifications, here are some alternatives and similar models
Crimp Ferrules Rittal AS 4051.550, copper/PP, 1.0 mm² (AWG 18), length 8 mm, diameter 3.5 mm, pack of 4000
Summary description:
Rittal AS 4051.550 crimp ferrules for insulated cables, made of copper with polypropylene (PP) insulation. Rated for 1.0 mm² (AWG 18) conductors, with an 8 mm barrel length and 3.5 mm outer diameter. Supplied in a pack of 4000 pieces, these ferrules ensure reliable conductor termination and improved connection quality in control cabinets, panel wiring and industrial installations.