excellent beginner starter set for those who wish to start patchwork or quilting. set includes: self-healing cutting mat (18 x 12 / 45 x 30cm), 45mm rotary cutter and patchwork ruler (6.25 x 12 / 16 x 32cm). accurately cut fabrics and materials for your patchwork using the high quality rotary cutter with a retractable 45mm blade and comfortable easy grip handle. the self healing cutting mat protects worktops or tabletops and provides a safe, secure and flat working surface for cutting, measuring and drawing quilt blocks and completing other sewing projects. the included transparent acrylic patchwork ruler has both metric and imperial measurements and gridlines printed on it, along with 30, 45 and 60 degree angles making it perfect for creating quilting blocks.