Based on this product's specifications, here are some alternatives and similar models
Hole saw drill attachment by Wolfcraft model 1 — drill saw accessory, for cutting circular holes
Summary description:
Wolfcraft 1 drill saw is a drill-mounted hole cutting attachment for creating circular openings in various materials. Designed as an accessory to be fitted to standard drills, it enables controlled hole cutting for installations, pipe passages and mounting tasks. Practical for DIY and light professional use where round holes are required.