Garden Water Butt,rain Barrel Adaptor Connector+ Hole Drill kit 1/2",3/4",+1"bsp

1/2" bsp female thread - requires a 21mm hole. 3/4" bsp female thread - requires a 27mm hole. 1" bsp female thread - require a 34mm hole. 1/2" bsp = 21mm across the thread.

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