Additional Info SKU: Inner Diameter: Outer Diameter: Length: Forecast_RA7-INS-GWG 12.69mm(0.500) 16.3mm(0.645) 81.44mm(3.20) SKU: Forecast_RA7-INS-GWG Inner Diameter: 12.69mm(0.500) Outer Diameter: 16.3mm(0.645) Length: 81.44mm(3.20)