Material: Steel+nylon Color: Black Size: 38cm(handle length) Features 1.Multifunctional Gym & Home Fitness Tool: Wrist and Forearm Blaster Great for building muscles and creating power for wrist and forearm training. Improve performance for any sports like golf, baseball, tennis, wrestling, and other sports. 2.Rugged steel construction: thie material of this forearm wrist blaster roller is steel pipe + EVA + nylon rope. Size: tube length 37cm/14.57inch, rope length 105cm/41.34inch, great for fitness lovers of all levels. Note: The hanging weight should not exceed 40 pounds, and the negative weight disc is not included in this product. 3.Great for arms hands and forearms: Helps strengthening the wrist, arm and forearms as well as increasing muscle tone, and this fitness equipment doe s not require much space, very suitable for people who cannot go to the gym. Bearing weight: 150kg Feature: Durable