Features: Good Quality & Ergonomic Design: This aluminum alloy hand exerciser(100-350lbs) are firm and not easily deformed, and ensuring long use timing, perfectly fitting your hand, feeling soft and comfortable. Increases Hand Grips: This handle adopts concave-convex pattern, which are more non-slip. It will not slip even if your hand are full of sweat. Build strength in your hand, wrist, fingers and forearm. Effective Grip Strengthener: Handgrips strengthener delivers effective force to your wrist, finger, and forearm muscles, its design channels the resistances from its rust-resistant steel spring to your hand. Hand Exerciser: Beat for forearms and arm strengthener. The hand exerciser will exercise all the muscles of the fingers, hand and forearms, which will lead to better exercise and you can avoid injuries. Easy to Carry: Adopt portable and light-weight design, easy to put into your pocket or backpacks. They are small equipment so you can use them anywhere and any timing, super easy to carry and use. Specifications: Material: Aluminum Alloy+Steel+Sponge Color: As The Picture Shows Specification Options: 100lbs/150lbs/200lbs/250lbs/300lbs/350lbs Size: As The Picture Shows Package Includes: 1Pc x Hand Grips(with Sponge Sleeve) note: Please allow 1-2cm error due to manual measurement. Please make-sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!