Product name：Wrist arm exerciser   Color: Black   Material:   Style 1: PP+Steel Wire +Engineering Plastic   Style 2: PP+ carbon steel   Size:   Style 1:31.5cm*12.5cm*17cm   Style two: 26.5cm*15cm*3.5cm   The package includes: 1*Wrist arm exerciser   Features:   1.High Performance: Our arm exerciser has variable resistance and adjustable grip.   2.Function: Strengthen flexor and extensor muscles. Exercises the forearm, wrist, and fingers.   3.Exquisite Craftsmanship:Fine workmanship, reliable quality, product design is reasonable, simple and convenient, is a very useful arm exerciser.   Exquisite Design:Ergonomic design for comfortable handling. Our arm exerciser can increase grip strength.Forearm support for addedcomfort.   Quality Guaranteed:If you have any question or any unsatisfactory about the product, please do not hesitate to contact us,we do must help you solve the issue well. When we received it, we will deal with it as soon as possible.