Product Description Specifications EPDM Pull Plug: Major Dia: 0.257 IN. 6.5 mm; Minor Dia: 0.13 IN. 3.3 mm; Length: 1 IN 25.4 mm; Hole thread: 1/4; Box Qty: 500 Max Temperature: 450° Major Diameter: 0.257 inch Metric Major Diameter: 6.5 mm Minor Diameter: 0.13 inch Metric Minor Diameter: 3.3 mm Material: EPDM Color: Black