Product Description Specifications Multi-Use Conical Stopper: Color: Red; Major Dia: 0.425 IN, 11 mm; Minor Dia: 0.236 IN, 6 mm; Fits: M12; Length: 0.790 IN, 20.0 mm; Box Qty: 1000 Max Temperature: 600° Major Diameter: 0.425 inch Metric Major Diameter: 11 mm Minor Diameter: 0.236 inch Metric Minor Diameter: 6 mm Metric Thread: M12 Material: Silicone Color: Red