Windoze 7 may not like the post box...............
They do look nice and clean. Yes, how do you get them off? Another thing is what happens if one starts seeping when you are out. Cannot grab a wrench or screwdriver and tighten it until you can replace it.
Rick, those look great. I need you to run down to Lowes tomorrow and get some stainless bolts for the thermostat housing.