This package contains 100 clips that have great holding capacity for many Crafts. They have wide openings, a flat base and a guide scale. They will hold several layers of fabrics and are a great alternative to pins, especially when working with vinyl's, piles and heavy weight fabrics. The clip has calibration marks on the base at 3/16", 1/4" and 3/8". The total depth of the throat of the clip is 1/2". The clip itself is 3/8" wide and 1" length.