June Tailor Rulers are designed to help make quilting and sewing projects easier and more efficient. Creating fashions are quick, easy and lots of fun with each wonderful ruler. Use your rotary cutter and mat, and you'll be creating beautiful quilts, hats, scarves, tabletoppers and more. Charming Shape Cut allows you to see your project under the ruler for accurate positioning and marking. Use with a rotary cutter and mat, sold separately.Details:Perfect for four-patch and rail fence blocksSlits every half inch mean precise cutsUse with a rotary cutter and mat, sold separatelyFor blocks 5" and smaller