Widely Used - Suitable for various environments, including coffee tables, home desks, glass tables, wooden tables, and tile floors. Train anytime, anywhere. Durable Spring - Designed for long-term use; the spring maintains integrity during training and offers enhanced performance compared to standard springs. Strong Suction Cup - Features a thickened suction cup for easy installation and secure fixation on smooth surfaces when bending the arm trainer. Powerful & Reliable - This arm wrestling training equipment allows for consistent practice. The wrist exerciser is ideal for strength training. Easy to Install and Remove - The device can be quickly set up or taken down and easily stored when not in use. Note: For optimal suction, install on a clean, flat, and smooth surface. Color: Black Material: Spring Steel Type: A: 35-40LB Package Contents: 1 x Arm Wrestling Training Device Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the photo and the actual product. Measurement may vary by +/- 1-3 cm.