The basics Avoid seam imprints when pressing seams open because of its smaller radius.  The benefits It is also great for pressing narrow seam allowances to one side (like serged seams, welt pockets, bound buttonholes, quilts).  The uses Features a flat side that can be used as a clapper to set creases and pleats. The bottom line Stores easily and features a keyhole groove that allows for convenient hanging. Made in the USA. Measures approximately 16" x 1 1/2" x 3/4".