Based on this product's specifications, here are some alternatives and similar models
Adjustable HSS Reamer GEKO G38264 17–19 mm, pack of 100
Summary description:
Adjustable HSS reamer by GEKO, model G38264, with a diameter range of 17–19 mm supplied as a pack of 100. Made from high-speed steel (HSS) for durability and precise material removal, this reamer is suitable for finishing and enlarging drilled holes in metal and similar materials. It is intended for use in hand-held or machine-mounted operations where adjustable sizing and batch availability are required.