SPRI Interchangeable Dual-Hand Strap Perform the same exercise you would normally do with pulley type machines with this simple tubing system Includes a sturdy nylon door attachment, allowing workouts at home, office or while traveling Tubing is 2 ft in length and is available in 5 different, color-coded, resistance levels Attach to system accessories such as Ankle Strap, Handle, Thigh strap, dual-hand strap, and an easy grip, padded foam handle for a multitude of exercises Smaller, portable version of a cable pulley machine