Based on this product's specifications, here are some alternatives and similar models
Hole saw AWTools AW49564 — AWTools AW49564, lightweight 175 g
Summary description:
AWTools AW49564 hole saw is a cutting accessory designed for creating circular holes. Model AW49564 is a lightweight unit weighing 175 g, intended for use with compatible drills and drill drivers for installing pipes, cabling, fittings or for general woodworking and light construction tasks. Compact design aids handling and portability.