Two sets of roller bearings; steel; 7.000 in. Lg; 5.750 in. W; 3.812 in. O/a h; 4 unthreadedmtg holes; 0.500 in. Dia; 4.500 in. Center to center holes; 4 threaded mtg holes 0.500-13 unc-2b, rh; 3.625 in. Center to cneter ofmtg holes; two holes 0.438-20 unf 2b rh on bearing side