Product Description Specifications Silicone Pull Plug: Major Dia: 0.468 IN. 11.9 mm; Minor Dia.: 0.25 IN. 6.4 mm; Length: 1 IN. 25.4 mm; Hole thread: 29/32; Box Qty: 250 Max Temperature: 600° Major Diameter: 0.468 inch Metric Major Diameter: 11.9 mm Minor Diameter: 0.25 inch Metric Minor Diameter: 6.4 mm Material: Silicone Color: Blue