Brake Tubes are lowering devices intended for rescue use. They can also be used as rappelling devices, and work rather well in that application, but because of their size, I don't see why one would choose them as a primary rappel device.
|460||Forrest Wonder Bar||Al tube bolted to guide block and Al angle, QR pin safety||John E. Weinel, Inc., 1985||1833||305||146||74||3295|
|1406||Petzl Tuba||2 Al tubes welded in "L" shape, guide rod /w screw closure, triangular steel attachment loop||Michiel Lofton, 2013||1161||273||153||79||3283|
|542||Rock Exotica Brake Tube||2 Al tubes welded in "L" shape, guide rod /w screw closure, triangular steel attachment loop||On Rope 1, 1997||738||270||150||80||3240|