5-60/100/150kg Grip Strength Gym Wrist Expander Hand Strengthener Adjustable Muscle Recovery Fitness Hand Strength Exercise. Durable Grip Strengthening: Crafted with high-strength thickened spring made of stainless steel, this hand grip strengthener boasts unmatched durability, rust-proof, wear-resistant, and sturdiness for long-lasting use.
eBay