Caster 4 In.,Swivel/Brake,375 lb, For Use With Grainger Item Number 19H365, 19H366, 19H367, 20UY83, 20UY84, 20UY86, 40AL24, 40AL25, 40AL26, 40AL27, 40AL28, 40AL29, 40AL30, 40AL31, 40AL32, For Use With Mfr. Model Number GR-1500DB219-PU, GR-1500DB219AT, GR-1500DR219, GR-1500DR219-PU, GR-1500DR219AT, GR-1500PCB219-PU, GR-1500PCB219AT, GR-1500PCR219, GR-1500PCR219-PU, GR-1500PCR219AT, GR-1500PTB219-PU, GR-1500PTB219AT, GR-1500PTR219, GR-1500PTR219-PU, GR-1500PTR219AT, Fits Brand Snap-Loc