Specialty screens and grape spiral are perfectly sized to strain and seperate fruit and vegetable juice and pulp from their seeds, skins and stems. For use with Back to Basics food strainer and sauce maker.Berry Screen Fine screen when removing small seeds for jams and jellies.Pumpkin Screen Course screen for processing pumpkin and squash.Grape Spiral Shorter spiral to process grapes and avoid jamming.Salsa Screen Coarse screen for processing salsa and chunckier recipes.