Lightronic 4pcs 3/4" 1" Led Light Bar Clamps Mounting Brackets Roof Roll Cage Holder for HID LED Fog Lights LED MOUNTING BRACKET CLAMPS FOR ROOF ROLL CAGE BULL BAR 19MM/25MM TUBE BAR Material: strong and light-weighted black aluminum Diameter:30mm/1.2"(without liner inserts) Diameter:25mm/1"(with thin liner inserts) Diameter:19mm/0.75"(with thick liner inserts)