Based on this product's specifications, here are some alternatives and similar models
Hole saw AWTools AW43306 — AW43306 model, circular drill accessory
Summary description:
AWTools AW43306 is a hole saw accessory for drills designed to cut circular openings. Supplied as model AW43306 from AWTools, it serves for creating round holes in materials compatible with hole saws. Use it with a drill or rotary tool for tasks such as installing pipes, conduits, door hardware or electrical boxes where a circular opening is required.