The Revolution 640LEC combines two main leg exercises in one bench.  With the 640LEC you can perform leg extensions & with a small adjustment perform lying leg curls.  Work both the quads & hamstrings effectively and safely.  This bench can give you a serious workout.  The Revolution 640LEC is plate loaded to increase resistance when exercising.  It has an adaptor sleeve to accommodate both standard and olympic size weight plates.  The 640LEC is great quality and features a very functional range of motion.  This bench is suitable for most fitness & strength levels.