Based on this product's specifications, here are some alternatives and similar models
Copper conductor roll Rittal SV 9676.504 — copper material, with 13 mm bore
Summary description:
Rittal SV 9676.504 is a copper conductor roll made from copper, designed for electrical and grounding applications where conductive metal is required. The product features a 13 mm bore and a copper finish, suitable for use in enclosures, busbars, grounding points and custom electrical assemblies requiring reliable conductivity.