Home / General / Tube, Boom Up Wide Tube, Boom Up Wide$50.00 Tube, Boom Up Wide quantity Add to cart SKU: Q40179W Category: General Description Description Widens space between boom tubes to accomodate (up to) a 72 inch diameter prop! Price is PER tube – If ordering ONE replacement tube, please specify RIGHT or LEFT. Should be ordered in set (2). Includes instructions. Fits Sprint II or Sport II top mount planes currently using 68″ dia. prop. Click HERE for installation instructions.