This item is a forearm training device , adoption of iron and nylon material. Strong construction, nylon rope, can be used with the standard discus, developed to train wrist and forearm strength trainers. Fit for professional or personal use. Features -Color:Assorted Color -Material:Iron,Nylon -Size:37.50X7.00X7.00cm/14.74X2.75X2.75in -Using nylon woven rope of the wrist roller connecting, strong and portable for long serving life. -Can be used with the iron block to effectively improve the strength in your arm, wrist, and forearm. -Adjustable strength, will not cause harm. A good present for your boyfriends and father. -Easy-to-use design that makes it perfect for everyday workouts. Lightweight and easy to carry, could take it for travel, gym, home. -Simple operation, easy to use. A good fitness equipment for improving your grip endurance and strength. Package list: 1 x Forearm Trainer