Product Description Specifications Silicone Pull Plug: Major Dia: 0.109 IN. 2.8 mm; Minor Dia.: 0.062 IN. 1.6 mm; Length: 0.625 IN. 15.9 mm; Hole thread: 4-40 THRD; Box Qty: 500 Max Temperature: 600° Major Diameter: 0.109 inch Metric Major Diameter: 2.8 mm Minor Diameter: 0.062 inch Metric Minor Diameter: 1.6 mm Material: Silicone Color: Red