New Brand and High Quality.Material:Hard plastic & Stainless steelSize:one size fit allColors:Green，Orange(Random delivery)Note:1. Physical exercise is a suspense into the process，so that should not be too large when using hand pressure degrees should be gradual2.This Product is finger exercise，do not used for other purposes， and do not have the medical effects3.This product should be kept away from children，to prevent children's fingers pinchPackage Included:1 x Grip Hand Exerciser