PROFESSIONAL EXTRUDED ALUMINUM BLOCK provides durability and endurance. 60 HOSES use the highest technology rubber materials giving the hoses the most flexibility and reducing the risk of kinking. HIGH AND LOW SIDE R134a COUPLERS snap easily to A/C service ports. EASY TO READ temperature scales on 2 1/2 gauge face (PSI/? Our manifold gauge sets are constructed of the finest materials and machined with precision to the highest quality standards. At Mastercool, every manifold we build is built to last. This kit includes a professional extruded aluminum block, silicone dampened, recalibrateable gauges, 3 - 60 hoses, professional R134a couplers and includes a free (85530) 3-IN-1 side mount can tap valve.