This alignment guide helps you install Cluck Cluck Sew Diagonal Seam Tape on your sewing machine in a perfectly straight line so you get a perfect 1/4" seam every time.  The guide is laser cut by LaserCutMyQuilt.com.  You may also use the guide to install painters tape as a guide.  Cluck Cluck Sew brand seam tape is required to sew some of the quilts available here.