Based on this product's specifications, here are some alternatives and similar models
Blind rivet GESIPA 5x12 mm countersunk head KS for 6.0–8.0 mm materials, pack of 500
Summary description:
Blind rivet GESIPA 5x12 mm with a countersunk (KS) head, suitable for joining materials with a total thickness of 6.0–8.0 mm. Supplied as a pack of 500, these blind rivets are designed for one-sided installation where access to the joint back is restricted. Typical uses include metalwork, sheet metal assembly, enclosures and structural fastening, providing a flush finish and reliable mechanical fastening.