... technology, keep gps no move, no shocking Navigator mat, nav mat, nav-mat Specifications:1.Outer diameter:198mm.2.Material:spandex, with bracket, steel ... resists low temperatures -40.6. Steel balls:100%Main features:1.Provide the most portable installation fittings for your GPS system ... retail packingUS patent No:29/296,269PCT/CN2008/000536 Navigator mat/GPS dash mount