Flanger FA-12 Guitar Piano Finger Exerciser Aluminum Hand Grip TrainerDescription:Brand: FlangerModel: FA-12Name: Finger Exerciser Aluminum Hand Grip TrainerColor: Grey、Silver、Gold and Mini silver Strength range: 3.5-8.5 pounds Material: Aluminium alloy、ABS silicon Spring components: Exquisite steel wire Size: 66*83*23.5 mm weight: 62g    Mini version:   Strength range: 2-5 pounds   Material: Aluminium alloy、ABS silicon   Spring components: Exquisite steel wire   Size: 56*83*23.5 mm   weight: 52g  For: Children  finger strengthenedFeature: Single press process、that has a better consistency of force training and increases fingers strength quickly.New gradient type strength training method、greatly enhances the rhythm of strength training.Button hole position adopted straight-through production skill to make it feel more smooth.Made of aluminium alloy material、with delicate texture and fashionable design.A portable and convenient exerciser for carrying and practising.It is a suitable tool for warm-up before the show.FA-12 Manual:  ClickPackage included:1 x Flanger FA-12 Finger Exerciser Aluminum Hand Grip Trainer1 x Manual