Based on this product's specifications, here are some alternatives and similar models
Ferrule terminal Erko TE 6mm² tin-plated, pack of 100
Summary description:
Erko tin-plated ferrule terminal TE for 6 mm² conductors, supplied as a pack of 100 pieces. Designed to provide reliable crimped connections on stranded wires, improving contact area and preventing strand fraying. Suitable for use in electrical panels, junctions and terminal blocks in residential, commercial and industrial wiring applications.