Material:High quality Steel spring,Aluminum handle
Ergonomic Knurling Design, Solid Aluminum/Sponge Handle For a Non-Slip Grip and Super Comfortable To Hold.
Rust-Proof Coated Spring in 6 Different Resistance Level From 100lbs to 350lbs for All Levels of Users.
Two pieces Non-slip tapes(in random color) send as a gift
Portable body-building grip device