Features： 1、PULLING FORCE ADJUSTMENT: Rotating the nut and both side's bars will automatically extend or shorten so as to achieve the purpose of adjusting spring tension. Triangular support enhances the stability of brackets to make them resist bigger pulling forces. 2、FINGER WRIST ORTHOTICS: This finger wrist orthotics can not be straight for patient finger hand stroke, powerless, joint, stiffness, bend. To build strength and flexibility in muscles of hands and fingers, and tendons of the elbow. 3、ADJUSTABLE FINGERSTALL: Adapt to the finger size, Best design for any adult hand size using, regardless of left and right, it is made of aluminum alloy stent, spring, arc rubber sheet, and sponge cloth and other materials, not easy to fall. 4、FUNCTION: Helps to treat finger cramps and finger rehabilitation training, functional exercises of the long tendons of the thumb, prevention and correction of contraction stiffness, wrist extenders and finger stretch muscles. 5、SCOPE OF APPLICATION: Wrist extensor and finger extensor training, finger and wrist function and strength rehabilitation training, finger and wrist spasm. This finger trainer does not distinguish between left and right, get exercise from it. Specification： Item Type: Finger Orthosis Material: Aluminum Alloy Scope of Application: Wrist extensor and finger extensor training, finger and wrist function and strength rehabilitation training, finger and wrist spasm Package List： 1 x Finger Orthosis 1 x Sponge Pad 1 x Manual