Squeeze 4 Strength 1 lb. Hand TherapyPutty Yellow XSoft Crutch Accessories Material: ABS Exercise Balls Material: ABS 4 Channel Electrotherapy * Easy to add modularity allows the addition of two additional channels of electrotherapy light therapy or a battery module * High contrast 5 (13 cm) FSTN LCD monochromatic user interface * Two independent electrotherapy channels expandable to four independent channels * Multiple waveform electrotherapy six clinical waveforms: Interferential Premodulated High Volt Russian Symmetrical Biphasic and Microcurrent * Documentation of treatment data with Patient Data Cards * User defined protocols for your specific needs * Dual frequency ultrasound at 1 or 3 Squeeze 4 Strength Therapy Putty can be squeezed stretched twisted or pinched * An excellent therapy for strengthening * Excellent for hands and even feet * Nontoxic clean non oily and non greasy * Will not leave residue or stick to the skin * Putty color reflects the putty strength from xx soft to firm * Various putty colors can be combined to create a custom strength program * Latex Free * Light Beige XX Soft Yellow X Soft Red Soft Dark Beige Medium soft Green Medium or Blue Firm *