To be used to measure finished quilt block. And to use to do a little necessary trimming. Always gently press finished Block - Measure and trim a little when necessary. (Just guessing doesn't always measure up) We make any size you might need. The larger size can work for cutting smaller but sometimes is a little bit awkward. But it seems the majority prefer the exact size for what they are making.
SPECIAL: buy both sets and save! Both Sets $34.99 plus $8 for shipping