The Spin Pin is so easy to use. It"s flirty and not too sleek, messy-cute. * This includes two Spin Pins for Dark Hair. * Do not interlock Spin Pins. No ponytail holder necessary. * Spin the Spin Pin clockwise into your style. Spin the Spin Pin counter clockwise to release from your style. * For a secure hold, twist the first spin pin deep into your updo catching the hair against your head. * Dimension: 1/2" wide x 2-3/8" long * for DARK HAIR