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Bronze Thru-Hull 1/2" Quantity in Basket: None Code: 1959 Price: $17.89 Shipping Weight: 1.00 pounds Quantity: Groco TH500W bronze 1/2" thru-hull. Flange is machined and grooved to retain bedding compound. Neck is threaded approx. 3/8" from flange. For 1/2" pipe, flange OD 1-1/2"