Package of 200 count extra fine .4mm shaft sewing pins. 2mm white glass head. Made of stainless steel. Many sewing uses including quilting, patchwork, applique and more. Use for basting. Sharp enought for use on sillk and other delicate fabrics. Some people prefer this size of pin to use when sewing with a sewing machine as the pins are thin enough and flexible enough to sew over without breaking the sewing machine needle. However if the sewing needle hits the pin, the pin will bend.