It's Sew Emma #ISE-788. Each pad makes 42 Square-in-a-Square quilt blocks. 4.5" Square in a Square Quilt Block Foundation Paper. Unfinished block size is 5".
3" Square in a Square Quilt Block Foundation Paper from its Sew Emma ISE779
4" Square in a Square Quilt Block Foundation Paper from its Sew Emma ISE780
6" Square in a Square Quilt Block Foundation Paper from its Sew Emma ISE796
1" Square in a Square Quilt Block Foundation Paper from its Sew Emma ISE784
5" Square in a Square Quilt Block Foundation Paper from its Sew Emma ISE795
2.5" Square in a Square Quilt Block Foundation Paper from its Sew Emma ISE786
