1,Rust proof treatment 2,Many bases available.Just let us know where you use them 3,Ball bearing keeps flags rotate freely 1,Rust proof treatment2,Many bases available.Just let us know where you use them 3,Ball bearing keeps flags rotate freely4,All bases suit all poles with same diameter ( function(){ var aBigImageSrc = [ 'http://i01.i.aliimg.com/photo/v0/747923407_1/base_of_flagpole.jpg' , ' ...