The OMNITRONIC BPS-4LCK is an adjustable steel distance tube for speaker systems, with a height range of 109 to 200 cm and a maximum load capacity of 20 kg. It features a 35 mm speaker pin, M20 tube thread and M10 flange thread for light fixtures. An automatic lock pin and integrated air suspension support safe, effortless height adjustment and lowering. The product includes a transport bag and is finished in black.