These overflow drain tubes feature a tough, flexible vinyl plastic end with a standpipe of white PVC tubing. To use simply insert vinyl end into the opening of thru-hull fitting. To drain livewell or baitwell, simply remove. This unique drain tube seals much better than any other overflow on the market and removal is much easier. BASE NOT INCLUDED. Fits: 1-1/8" - 1-1/4" thru-hull fittings