ITEM NAME:1/2 in Pipe Boat Marine Stainless Replacement Transom Garboard Drain QPA.Boat Garboard Drain Plug. 1 Piece Boat Garboard Drain Plug. Material: Stainless steel. Product list: stainless steel wire plug 1. Stainless Steel. Made of stainless steel material for ultimate corrosion resistance, heavy duty and durable.