Comfortable and DurableThe hand grip strengthener is made of reinforced metal alloy material, and the handle is made of thermoplastic rubber material, which is an environmentally friendly rubber with good wear resistance, anti-slip and shock absorption, and will not hurt your hands. Make your exercise more comfortable and safe.Adjustable ResistanceLSKSSNG grip trainer adopts adjustable resistance design, with a resistance range of 11-132 pounds (5-60 kg), and the hand grip strengthener can effectively improve the flexibility of fingers, wrists and forearms by increasing or decreasing tension.Portable and ComfortableThe LSKSSNG handle measures 6.1 x 4.1 inches and can be easily put into a pocket or backpack, allowing you to exercise your hands anytime and anywhere, whether at home, in the gym, in the office, or while walking, watching TV, outdoors and traveling.Ideal for Athletes and MusiciansThe hand strength exerciser can improve the hand and finger strength of athletes (rock climbing enthusiasts, fitness, tennis, baseball, boxing, golf and shooting) and musicians (guitarists, bassists, pianists and violinists). You can see fast results using hand exercise equipment in just 5-10 minutes a day.