2Pcs 6" to 4" Duct Reducer Ducting Airflow Tube Increaser Adapter Pipe Fitting 16mmx42mmx2m medium grinding medium grinding Frequently used on special purpose machinery industries Suitable in home Smooth interior surface design can reduce the resistance of ventilation
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US$ 23.30
US$ 25.00
US$ 197.50
US$ 154.50