Product Description Specifications EPDM Pull Plug: Major Dia: 0.156 IN. 4 mm; Minor Dia: 0.082 IN. 2.1 mm; Length: 0.625 IN 15.9 mm; Hole thread: 9/64; Box Qty: 500 Max Temperature: 450° Major Diameter: 0.156 inch Metric Major Diameter: 4 mm Minor Diameter: 0.082 inch Metric Minor Diameter: 2.1 mm Material: EPDM Color: Black