Moeller® Transom Drain and Plug Kit.
Fits flush to your boat's transom or exterior, allowing water to drain when trailered.
Plug has a screwdriver slot and a rubber o-ring to seal water tight. 1 1/8" I.D. hull opening. 2 3/16" Mounting flange diameter. 2" Overall length. 7/8" I.D. training tube. 3/4" plug insert diameter.