K&M 21377 Spacer tube "Easy Lock" | M20

K&M 21377 Distance Tube "Easy Lock" | M20 steel tube combination for use in subwoofers with M20 connection. The height is fixed with a safety hook and secured quietly and play-free with a clamping screw. The slim design of the clamping collar allows for space-saving transport and provides a discreet appearance. The usable height ranges from 900 to 1,400 mm and is achieved in 5 increments of 100 mm. The patented spreading pin with quick release ensures a firm and play-free fit of the satellite box. The plastic spreading jaws also provide a resonance-free connection between the box and the tube.