Quint Measuring Systems-Professional Plain Edge Clear Triangle. Ideal for making triangles! Can be used for quilts, tablecloths, placemats, skirts, hats and more. Guaranteed not to chip, crack or break with normal use. This package contains one 12 inch long 45/90 degrees clear acrylic triangle with no markings. Guaranteed not to chip, crack or break with normal use. Made in USA.