Hand Grip Strengthener Counting Grip Strength Trainer Adjustable Resistance 10 60kg Forearm Strengthener Hand Exerciser For Muscle Building And Injury Recovery For Athlet Features: The spring buckle is made of high-quality stainless steel flexible spring, which has strong grip and long service life. handle is made of premium ABS and TPE, using concave- non-slip soft rubber, which is very comfortable grip and can slipping. Equipped with 10-60KG intensity, allowing you to adjust freely. For beginner girls, it is recommended to keep the grip strength at 5-20KG, for boys to exercise needs, 20-40KG is recommended, and for fitness enthusiasts, the grip strength is recommended to be 40-60KG. This can count, every time you hold it, it automatically counts once, and it can be reset to , which is very convenient and practical. Product Description: Package Includes: 1 x Fitness Hand Grip The spring buckle is made of high-quality stainless steel flexible spring, which has strong grip and long service life. handle is made of premium ABS and TPE, using concave- non-slip soft rubber, which is very comfortable grip and can slipping. Equipped with 10-60KG intensity, allowing you to adjust freely. For beginner girls, it is recommended to keep the grip strength at 5-20KG, for boys to exercise needs, 20-40KG is recommended, and for fitness enthusiasts, the grip strength is recommended to be 40-60KG. This can count, every time you hold it, it automatically counts once, and it can be reset to , which is very convenient and practical.