Brass R410A, R22, R404A 2-Way Manifold Gauge Set with 3-1/8" Gauges, 3-60" Hoses and Standard 1/4" FittingsHEAVY DUTY FORGED BRASS BODY gives life long durability and endurance FREE FLOATING PISTON TYPE VALVES allow for less friction and internal wear and tear extending the life of the internal o rings GRADE 5 LEVEL HIGH PRESSURE HOSES with SAE standard fittings using the highest technology rubber materials giving the hoses the most flexibility and reducing the risk of kinking 3 1 8 SILICONE DAMPENED GAUGES smooth out needle movement while the color coding