Seachoice Garboard Drain Plug Only 1/2" Chrome 50-18741 by Seachoice $5.38 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Seachoice Garboard Drain Plug Only #50-18741 Pipe Size: 1/2" NPT. Chrome Plated Brass.