Based on this product's specifications, here are some alternatives and similar models
Hole saw Dedra DED1520103, diameter 10.3 cm, 1 piece
Summary description:
Dedra DED1520103 hole saw with a cutting diameter of 10.3 cm, supplied as a single piece. Designed for creating circular holes in materials compatible with hole saw use. Useful for plumbing, electrical installations and carpentry where a precise 10.3 cm bore is required. Compact single-unit accessory for compatible drills.