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The Viking DWOUK10 is the output shaft knob for R-6, T-21 and F-1 swing gate operators. It is the knob for the output shaft. Replace it when the knob is cracked or missing. Listed on both older and current units. Fits R-6 T-21 F-1 Before You Order Match the part number on your existing knob. The output shaft cover is a separate part.
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🇺🇸 Ship from USA · On Agora since 2026
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