Based on this product's specifications, here are some alternatives and similar models
Drill Stop Collar DORMER R95022.5 — diameter 22.5 mm
Summary description:
DORMER R95022.5 drill stop collar with a 22.5 mm diameter designed to set and control drilling depth. Compatible with standard drills and used to ensure consistent hole depths in metalworking, woodworking and construction tasks. Simple clamp-style attachment provides repeatable positioning for production setups and repair jobs.