Based on this product's specifications, here are some alternatives and similar models
WORK STUFF K2 Separator for Detailing Bucket (D7022) — debris separator for wash bucket
Summary description:
WORK STUFF K2 Separator (MPN D7022) is an accessory designed to fit inside a detailing wash bucket to separate dirt, grit and particles from wash water. The rigid insert holds debris below the cleaning zone, helps prevent swirl marks and prolongs the life of brushes and microfiber cloths. Suitable for car washing and paint-care workflows where contamination control is needed.