I liked this. I bought these as a beginning quilter and it was exactly what I needed for blocks. As I've expanded my abilities and need for different blocks, I have found that these just don't quite cut it anymore. It is near impossible to cut triangles, and the measurements sound like a perfect russian stacking doll at first. When sewing 4.5 Square inch pieces into a block, though, it does not fit any one of these rulers. The 2.5 inch one seems rather useless, unless you like that tedious type See full review