Widely Used - Suitable for a variety of environments, coffee tables, home desks, glass tables, wooden tables, tile floors, etc. You can train anywhere you want. long-term use, the spring will not break during training, and it is than ordinary springs. Strong Suction Cup, Stable When Bend - Thickened strong suction cup is easy to install, ensuring a stable fixation on the table/desktop when you bend the arm trainer. POWERFUL & RELIABLE - With the arm wrestling training equipment, you can practice anytime and anywhere, this wrist exerciser is a for arm wrestlers. Easy to install or remove. The arm wrestling training equipment can be easily stored when not in use. Note: Please install it on a clean and smooth place to get the best suction Colour:Black Material:Spring Steel type:A: 35-40LB Package Contents: 1 x Arm wrestling training device Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.