Installation Kit, Product Type Installation Kit, Compatible Radio Manufacturer Model Number JBS-147D, JBS-147M, JBS-447D, JBS-447D-LIBERTY, Compatible Radio Grainger Model Number 423J11, 423J12, 423J13, 423J15, Material Copper, Plastic, Steel, Compatible Radio Brand Ritron, Compatible Radio Series JBS-147D, JBS-147M, JBS-447D, JBS-447D-LIBERTY, Compatible Radio Type Vehicle-Mounted, Number of Pieces 4