Top left panel: mass-loss rates of SNe IIn versus local metallicity measurements. Triangles are upper limits. Above 10^-3M_⊙ yr^-1, the mass-loss rates appear to be higher at higher metallicity. The power-law (PL) dependence on metallicity (α = 0.69 e.g., Vink 2011) of the line-driven mass-loss rates is shown with a black segment and is consistent with the data. SNe IIn-L (98S-like) typically show lower mass-loss rates than long-lasting SN IIn (88Z-like). Top right panel: mass-loss rate CDFs for metal-poor and metal-rich SNe IIn, shown to better highlight that at higher metallicities the mass-loss rates tend to be higher. Two different metallicity cuts are shown, at log(O/H) + 12 = 8.3 and 8.5. Bottom left panel: wind velocities of SNe IIn and SNe Ibn versus local metallicities. Triangles are upper limits. The PL dependence on metallicity (α= 0.12 (e.g., Kudritzki 2002) of the line-driven wind velocities rates is shown with a black segment, and is consistent with the data. SNe IIn-L (98S-like) typically show higher wind velocities than long-lasting SN IIn (88Z-like). Bottom right panel: wind-velocity CDFs, for metal-poor and metal-rich SNe IIn, shown to better highlight that at higher metallicities the wind velocities tend to be slightly higher. Two different metallicity cuts are shown, at log(O/H) + 12 = 8.3 and 8.5.