The Discovery™ Series Selectorized Line Rear Delt / Pec Fly features dual independent-movement arms with upper pivots to accommodate varying arm lengths. Each can be set to 13 starting positions over a 120-degree range. The weight is offset to the right for the most convenient access. This unit allows you to provide two traditional movements in one unit. Easy adjustment pins allow users to seamlessly move between pec fly and rear delt movements. The dual pivoting arms allow for users of different arm lengths to comfortably perform each exercise while maintaining proper form. Independent movement arms provide a variety of movements on one unit while increasing core activity.