specific strain-locking gadget holds tubing in function so that you can set the length and manipulate the range of motion. Switch out tubing for one of a kind resistance stages. Holds maximum tubing. Hard p. C. Black. Includes 2 handles only. Tubing and resistance bands are offered separately. Because 1986, power systems’ passion for health has been fueled via our clients. Power systems is committed to ensuring human beings have the equipment to guide energetic lives with expert-grade products, modern instructional materials, and elite customer support. “power your capability” is the philosophy that courses the entirety energy systems stands for.