Boss extensions are used when a longer boss is needed to fit a motor shaft. Universal-boss and W-boss extensions accommodate sickle-shaped and standard impellers. Universal boss extensions are offered in 0.39, 0.79 and 1.58" (10, 20 and 40 mm) sizes. W-boss extensions are available in lengths of 0.79 and 1.58" (20 and 40 mm) sizes.

Multi-Wing America, (800) 311-8465