Product Description Specifications EPDM Tapered Plug: A: 0.748 IN 19 mm; B: 0.55 IN 14 mm; Length: 1 IN 25.4 mm; Box Qty: 250 Max Temperature: 450° Major Diameter: 0.748 inch Metric Major Diameter: 19 mm Length: 1 inch Minor Diameter: 0.55 inch Metric Minor Diameter: 14 mm Material: EPDM Color: Black