Introducing the DeWALT 3/4" Compressed Air Piping System! Compressed Air - Bring it where you need it. Extend the reach of your compressor by setting up multiple workstations with 36 accessories. 3 Flexible layers of 100' 3/4" Tubing with 200 MAX PSI. The tubing outer and inner material made of high density polyethylene, and aluminum middle layer to ensure strength and durability. Inner tubing provides efficient air pressure and prevents corrosion. Kit accessories are made from brass, aluminum and steel to maintain air pressure, flow and eliminate leaks. Powder coated finish to eliminate corrosion and rust.