The Leosportz Hand Grip Strengthener is your ultimate tool for building grip strength with its innovative double-layer springs. Crafted from high-carbon steel and aerospace-grade materials, this device ensures unparalleled durability and longevity. With adjustable resistance up to 100 kgs, it caters to all hand sizes, making it perfect for both men and women. The ergonomic design features a non-slip handle and a four-bar linkage, providing even pressure across all fingers, which promotes b