The Water Thief is a 1-1/2" x 1-1/2" x 3/4" Tee connector, for connections at intervals in a 1.5" hose lay. The 3/4" outlet allows a 3/4" GHT forestry hose line to be connected for mop-up operations. A shut-off valve makes tapping lines or moving hose easy. Lightweight Scotty Plastics make a great value. Corrosion free and visible at a distance.