This multi-purpose tool is perfect for trimming any quilt-as-you-go blocks. Our 4 ½” x 12 ½” acrylic ruler has a sturdy crimped aluminum edge. This edge is used to protect the quilt block front while trimming the bulk underneath. Use the Trimmer By George 3.0 to cut the perfect size sashing and binding for your HoopSisters EmbroidaBlocks. 60mm ROTARY CUTTER REQUIRED.