Based on this product's specifications, here are some alternatives and similar models
Polystyrene Rasp Dedra 270x130 mm with ABS Handle, model 15B020
Summary description:
Hand rasp for shaping and smoothing polystyrene and other soft foams, Dedra model 15B020. Work surface measures 270×130 mm with a textured cutting face for controlled material removal. Features an ergonomic ABS handle for comfortable grip and precise handling. Suitable for model making, insulation trimming, craft work and installation tasks requiring fine profiling and edge finishing.