Spare elastic for Knog Blinder turn signals, which are equipped with a replaceable clamp, consisting of elastic only. You can also order a clip for the elastic - code K11887.3 sizes.Short: For handlebars and seatpost from 22 to 27 mm in diameter.Medium: For handlebars and seatpost from 27 to 32 mm in diameter.Long: For handlebars and seatpost 32 mm in diameter and up.Long: For handlebars and seatpost 32 mm in diameter and up.Long: For handlebars and seatpost.