It's Sew EmmaFoundation Paper 6" Econo, 6" Economy from Lori Holt

Great foundation papers and instructions available on YouTube

Love these papers, perfect weight and very nice pattern to do.

That being said, the YouTube video that explains how to use these cuts rectangles and the directions have you cutting triangles. A lot fussier cutting and a number of times the placement ends up faulty. I’ve already cut all my pieces but I am going to try it with rectangle pieces and post results.

I love foundation paper piecing and this product is really great! The paper is well marked and easy to remove after sewing. I used it to make a table topper and couldn't be happier. If you enjoy foundation paper piecing or would like to try it I would definitely recommend this product.

This is a great product. It helps you make perfect quilt squares with no effort