Seachoice Garboard Drain Plug Only 1/2" Brass 50-18761 by Seachoice $4.25 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Seachoice Garboard Drain Plug Only #50-18761 Fits: 1/2" NPT. Cast Brass Bronze.