Fons and Porter Quarter Inch Seam Markers, 2-Pack FPR7845. Mark 1/4-inch sewing lines on patchwork pieces with this nifty set of tools. It is a quick and easy method for half-square triangles and hourglass units. Features an acrylic construction with easy to follow black and yellow markings. Instructions for two patchwork blocks included. FPR7845
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