Automatic Counter: Built-in smart counter automatically records the number of grips, easily reset by rotating the button. Ideal for home or office use, tracking your training progress effortlessly., Adjustable Resistance: Ranges from 5-100KG, suitable for all hand strength training needs. Easily adjustable, perfect for beginners and experienced fitness enthusiasts., High-Strength Spring: Made of high-strength stainless steel, durable and rust-resistant. Thickened spring design ensures stability and safety during each grip exercise.