Constructed from solid aluminum for added durability needed for repeated, tough daily use. Contoured easy to grip hand wheels are color coded for quick and easy identification. Full 3/8" bores through the body aids in getting the job done quickly and efficiently. Large, easy to read 3-1/8" (80mm) gauge protected by Lexan lenses. 3/8" vacuum port for use with larger hose to cut evacuation time. Improved face seal valves. Better design provides a tighter seal means less wear and improved flow. Proven, double O-ring piston design for extra reliability and longer life. Available with various length hoses or as manifold only.