4PC Set Chain Link Nylon Cantilevered Gate Rollers 4" post & 2-3/8" Gate Frame 4 WHEELS PER BOX set. Fits 4" Chain Link Fence Post Size; 4" post & 2-3/8" (2-1/2") Gate Frame Fits 2-3/8" (2-1/2") Chain Link Fence Gate Frame Pipes Commercial/Industrial Strength Nylon Cantilevered Roller Rated over 4000 lbs. Load Limit