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. Can be cut to customer's lengths. T-H Marine Push In Overflow Drain Tube Straight Fits All T-H 1-1/2" Thru Hulls, 18" L With Screen 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. Can be cut to customer's lengths.