Contoured Cam System- Specially designed cams provide unparalleled ergonomics throughout the entire motion; offering a perfect start, strong finish, and smooth resistance for human biomechanics -Convenient seat height adjustment suits people of various heights -Ergonomic handle design is comfortable in pec-fly position. -Dimensions: 56.1 x 32.8 x 77 in. -Stack Weight: 176 lb -User Weight: 500 lbs -Pully Ratio: 1:0.25 (per arm)