Middy\'s Side-Bush Gripper Bead Blue 18-22 are lightweight, discreet, small and pliable. They are made from soft TPE material with a tapered bore. Simply thread on with a pole-threader and once in place they retain the elastic, but can then also be slid-up the elastic to make small adjustments to the tension. Available in different colours and elastic bore sizes. (Image shows range, see description for correct size and colour.) Colour blue.Three per pack.Elastic 18 - 22.Small and pliable.TPE material.Designed with a tapered bore.Once in place they retain the elastic.