Nautilus Leg Extension 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: 38 IN (145 CM) L: 57 IN (97 CM) H: 60 IN (152 CM) STACK WEIGHT: 260 LBS (130 KG) OVERALL WEIGHT: 609 LBS (276 KG) SHIPPING WEIGHT: 668 LBS (303 KG) FEATURES User-friendly weight stack selection 5 lb incremental weight system for optimal progression Ratcheting seat adjustment Pull-pin adjustment Gravity assisted positioning Featuring the patented Lock N Load® weight selection system \"