95172-A Mastercool 4-Way Manifold Set with 4-72" Standard Hoses & 2-1/2" Gauges - With features like: full 3/8" bore all the way through the block for increased flow over standard block designs, ball valves rotate 90° between two teflon washers for ease of turning, even under pressure, 1/4 turn open and close, visual knob position indicates if valve is open or closed, gauges offered in a wide variety of gases and color coded gauges for multi-refrigerant recognition.