Based on this product's specifications, here are some alternatives and similar models
Insulated Ferrule Triton DUI-16,0-10NB for 16 mm² conductors, blue, pack of 100
Summary description:
Insulated ferrule Triton DUI-16,0-10NB designed for terminating 16 mm² conductors. The blue insulated sleeve provides reliable electrical insulation and strain relief when crimped to cable ends, improving contact quality in terminal blocks, relays and distribution panels. Supplied as a pack of 100 pieces for electrical installation, control cabinets and maintenance work.