This adapter incorporates an M20 top hat and attaches to the top handle of the Bose F1 Sub, allowing the use of an M20 speaker pole. It only takes a few seconds to fit and requires only one screw to be tightened. It is 3D printed from a tough carbon fibre filled plastic and fitted with a metal alloy tophat. Please see my other Bose F1 adapters. Speaker not included.
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