The equipment MB 7.31 “Butterfly in Standing position” is designed to develop large pectoral muscles. During the reduction it localizes the effort on the chest muscles level and also is developing the coracobrachialis muscles and the short head of the biceps.
Maximal Load on each side... 47,5 kg
The set includes the following weight... 8 x 10 kg; 6 x 2,5 kg