Sew Very Smooth Ideal Seam Guide 15" Sew Very Smooth notions ideal seam guide 15 Sew Very Smooth notions to make your sewing experience precise and smooth Ideal seam guide 15- the ideal seam guide for your sewing machine No clamps, no magnets, and no sticky residue Tacky rubber Strip on the back of this Acrylic guide holds it in place like the fence on a table saw