Bollard Cap Product Type Bollard Cap For Use With 4 in Schedule 10 Pipe Fitting Includes Not Applicable Overall Height 2 in Overall Length 4 1/2 in Outside Diameter 4 1/2 in Inside Diameter 4 1/4 in Color Black Material Plastic Finish Unfinished Weight 1 lb Compatible with Grainger Part Number 32X671 32X805 32X930 Compatible with Manufacturer Model Number BOL-24-2 BOL-36-2 BOL-42-2 BOL-48-2