2” outside diam. x 0.045” wall thickness, CLEAR ANODIZED 6061-T6 aluminum alloy, Originally used as datum tubes for measurement in photogrammetry . All are fitted with PVC dust caps. Condition as new. Suitable for use as: • marine radio ANTENNA-POLES, • fishing OUTRIGGERS • jib WHISKER-POLES for sailboats up to 30 ft • LIGHT STANDARDS for floodlights • FLAG-POLES, etc., etc. (2 of the tubes have internal wiring for floodlights that were used for setting-up photogrammetry. Wiring readily removable if not required.) 2 (two) 12 volt FLOODLIGHTS for the light-standards. 2 (two) 12 volt connecting WIRING for the floodlights. 1 (one) 12 volt SWITCHING UNIT and additional wiring for the floodlights and for quartz-halogen Slit-Lights (that were used for photogrammetry). 2 (two) Floodlights and a 12 volt hook-up wiring package included. 2 (two) custom AUTO ROOF-RACKS for all 9 lengths of tubing. INCLUDED IN PACKAGE: 1 (one padded) VALISE containing 10 (ten) quartz-halogen Slit-Lights 1 (one) VALISE containing 12 volt Wiring for the Slit-Lights (These items have been in dry storage, have been tested and work.)