MASTERCOOL (59861 Blue R410A, R22, R404A 3-Way Manifold Set with 3-1/8" Gauges and 60" Hoses Solid aluminum Exclusive 3/8 ball valve design Full 3/8 bore all the way through the block increases flow over the standard block designs Ball valve rotates 90 between two teflon washers requiring little effort to turn, even under pressure Color coordinated gauges for multi-refrigerant recognition