Features 1、Bidirectional Spring: Finger trainer is designed with bidirectional springs that are elastically pressurized to exercise the fingers. Hand exercises for grip strength may help heal arthritis, carpal tunnel, neuropathy and poor circulation. 2、Premium Material: The finger trainer is made of premium ABS and stainless steel material, durability and not easy to deform, the hand grip trainer provides a comfortable grip and enhances durability and functionality. 3、Customizable Tension: The finger grip trainer allows you to adjust and customize the tension of each finger. You can strengthen a single finger and prevent the trainer from favoring certain fingers. 4、Isolated Finger Training: Finger Strengthener individually isolates and builds strength, dexterity and endurance in each finger.Made of secure material, the grip trainer provides a comfortable grip. 5、Versatile: The finger trainer is perfect for anyone who wants to develop and maintain strong, healthy hands. Excellent grip trainer, builds wrist and forearm strength in the office, at home or on the train. Specification Item Type: Finger Strengthener Material: ABS, Stainless steel Quantity: 4pcs Grip Strength: 11LB Color: Orange Package List 4 x Finger Exerciser