The Leg Press B6 is a fantastic machine for building strength and muscle fast. The axle technology allows for maximum engagement of the glutes during intense exercises. Adjusting the backrest can vary the use of muscles and enables a more stable position if you have back problems, where as the shoulder pads on the seat slides help a secure sitting position during intensive work. The seat slide adjustment allows you to set the machine at knee angles most appropriate for your strength level and fitness goals.