Nautilus Standing Calf Proven. Smart. Effective. The Impact® Strength line brings many subtle innovations to the power of your next weight training workout. It is the evolution of the proven biomechanics and user features that have made the strength line a solid, competitive product. This line retains all the unique, proven, individual design features that customers have stated are ideal such as pre-stretch, start assist, range of motion selection and graduated & standard heavy weight stacks. Impact Strength incorporates new aesthetics and biomechanics features that have established its position as a competitive and diverse strength product line. W: 49 IN (124 CM) L: 41 IN (104 CM) H: 62 IN (151 CM) STACK WEIGHT: 260 LB (130 KG) OVERALL WEIGHT: 635 LB (288 KG) SHIPPING WEIGHT: 706 LB (320 KG) SKU: 9NA-S1309 FEATURES User-friendly weight stack selection 5 lb incremental weight system for optimal progression Pull-pin adjustment Gravity assisted positioning Featuring the patented Lock N Load® weight selection system \"