Vortex Kneeling Leg CurlVortex Series Kneeling Leg Curl Elite Plate Loaded Machine Engineered for Precision. Designed to Elevate. The Vortex Kneeling Leg Curl is designed to isolate and strengthen the hamstrings through a strict curling motion while maintaining proper hip alignment. With a kneeling pad setup and independent lever arms, this machine ensures controlled movement and balanced development of both legs. Constructed from heavy duty 3mm commercial steel, the Vortex