Hand X-Trainer, Set-1 Red, 1 Green, 1 Blue, 1 Black, Individually Packed, Exercise Illustrations Included, 4 ea/cs (081584291)A cross functional option, with applications ranging from rehab to strength training. They support a variety of finger, hand, wrist and forearm exercises making them an ideal replacement to putty and an economical alternative to hand extensors. With four progressive levels, exercise can be geared to the individual patients needs. Supports hot and cold therapy.