Its Sew Emma Triangles On A Roll Book- Lets get right to the point. Half square triangles are the best when it comes to creating awe-inspiring quilts. This book contains 16 quilts thatlet half square triangles shine. With designs featuring 8 different sizes of Triangles on a Roll, ISEH100, ISEH150, ISEH200, ISEH250, ISEH300, ISEH350, ISEH400, and ISEH450, sold separatly. Designs include: ruby, onyx, garnet, topaz, and more. 65 pages, spiral bound.