lightronic Roll Bar Mount 0.75" 1" 1.25" Horizontal Bull Bar Clamp Led Light Bar Mounting Brackets For UTV Light Bar Led Tube Clamp Roof Roll Cage Holder LED MOUNTING BRACKET CLAMPS FOR ROOF ROLL CAGE BULL BAR 19MM/25MM TUBE BAR Material: strong and light-weighted black aluminum Diameter:30mm(without liner inserts) Diameter:25mm(with thin liner inserts) Diameter:19mm(with thick liner inserts)