Automatically Provides Exact Seam Allowances. The Edge Sewing Sheets are used in conjunction with the Quattro 6000D's InnovEye Technology (built-in camera) and the Vertical Stitch Alignment Foot (SA189) to allow the system to provide proper alignment when sewing straight edges and gentle curves of fabric. The Edge Sewing Sheets which are peel-off plastic are easy-to-use and reusable. 5 Sheets included. It works with the Quattro 6000D only.