Product Description Specifications EPDM Tapered Plug: A: 0.375 IN 9.5 mm; B: 0.25 IN 6.4 mm; Length: 0.75 IN 19.1 mm; Box Qty: 500 Max Temperature: 450° Major Diameter: 0.375 inch Metric Major Diameter: 9.5 mm Length: 0.75 inch Minor Diameter: 0.25 inch Metric Minor Diameter: 6.4 mm Material: EPDM Color: Black