Nu-Source Wrist & Arm Training Bar - Blue, High Resistance Our wrist training bar measures approximately 1.57" x 12" (4cm x 31cm) A bendable, flexible bar that aids your wrists, forearm, and hands Aids in strengthening your muscles to alleviate soreness or prevent stiffness Commonly used during phyiscal therapy Use independently or progress through 3 resistance levels: Level 1 (Red): 5-10 lbs, Level 2 (Green): 10-15 lbs, Level 3 (Blue): 15-20 lbs