Diane 40-count Large Size Curved Bobby Pins are 2.5 inches long. They are made of good quality metal and come in a basic black color. Can be used by adults or kids with curly, straight, or wavy hair for a wide variety of hair styles, including buns, chignons, pony tails, and more. Its curved design contours to your head shape and make them ideal for wrap styles and to use with rollers. The ball tips at the end prevent from scratching the scalp or damaging hair and the flat design avoids crimping your hair. The bobby pins hold hair firmly in place and wont easily break. They are best for professional salons or for personal use at home, to perfect any hair style with ease and comfort.