With Quick rail 1-877-637-3712 Stem Swivel Caster {x4} Garment Rack Frame (x1) Square End Cap (x4} 7/16” Lock washer {x4) 7/16" Hex Nut (x4) Upright Bar (x2) Top Quick rail Bar {x1} Heavy Duty Z-Rack {Single Rail) Insert Casters (1) into frame {2} C. Attach top Quick rail bar {7) and Upright B. Tighten 7/16” lock washer {4) and 7/16” Bar {6} by sliding on to upright bars. hex nut (5). . insert Square end caps {3) into Frame. End caps will need to be hammered on.