Impulse sterling is the official supplier for the chinese national weight lifting team the impulse dual use pec deck rear delt is one of the great machines from impulse this is part of the dual range which is a range where they focus on combining two machine so you are able to work more muscles groups from the same muscles this is designed for smaller gyms with less space warranty of the impulse dual use pec deck rear delt main frames life time moving arms 2 years linear bearings springs