Dritz pins that are used for sewing, quilting, and home decor. Ball Point Size 17 Small Ball Head 175 piece- Ball point pins are used for knits and lingerie fabrics. Instead of a sharp point which may pierce the fabric, the rounded end pushes the knit loops apart. These Nickel plated steel pins have assorted color heads, are 1 1/16-inch long, and have an extra fine 1/2mm shaft. The plastic storage container has a curved side for easy pin removal, a tight fitting, snap on lid and the whole box is stackable.