Based on this product's specifications, here are some alternatives and similar models
Cutting guide Dremel DSM20 Cutting Guide (DSM840)
Summary description:
The Dremel DSM20 Cutting Guide (DSM840) is designed for precise cutting. It is compatible with SM600 and measures 257 mm in length and 333 mm in width. Each pack contains 1 piece, ensuring you have the right tool for your projects.