Loading... Please wait...4" Half Spool, For 1-1/8" Square Axle and 7-1/2" or 9" Spacing, Square Hole, Machined Bearing Surface, fits Case IH Disc Harrow Models 37, 46, 48, 60, 61, 76, 120, 122, 130, 132, 150, 330, 350, 370, 470, 480, 610 & 760,Replaces OEM# 472591R3