The Quick Curve Ruler? comes with a free pattern called "Urban Runner". It is used to cut the curve shapes out and square the blocks up after piecing. The ruler is a quality acrylic ruler with a curve cut out, where your rotary blade of any size will fit into. It's 7" x 12" in size and has a hang hole for storage convenience. From Sew Kind of Wonderful. Materials for Urban Runner: ~ (2) 1/4 yard assorted print *not fat quarters ~ 1/2 yard + 4" (solid background) ~ 1/3 yard for binding ~ 1 2/3 yard for backing Quick Curve Ruler?