The Scosche BaseClamp Adjustable Whip/Flag Mount Base has a 1/2 in. mounting opening and features 18 adjustment positions. The adjustable mount base from Scosche is durable and long-lasting. This is because the adjustable base is made of 6061-T6 aerospace-grade aluminum and stainless steel mounting hardware, so it won't rust and chip in the elements. The adjustable whip/flag mount base does require an additional BaseClamp tube clamp for use.

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