This 50 cm speaker pole extension is made of heavy-duty steel tubing with male and female threaded M20 ends and powder coating finish. It screws directly onto any M20 threaded subwoofer poles. 50 cm pole extension Heavy-duty steel with white powder coating finish M20 male and female ends Product type Stands and Tripod Accessories Material Steel Color white Surface Powder coated Length 500 mm Threaded connector M20 male Threaded connector 2 M20 female Weight 0,9 kg