2 1/2” silicone dampened, recalibrateable gauges Extra access port for vacuum line R1234yf high and low side quick couplers meets SAE J639 & J2888 R134a high and low side economy couplers 1/2” acme-m x 1/2” acme-f LH thread adapter (2) 12 mm-m x 14 mm-F R1234yf adapters Set of 3 - R134a standard hoses Includes: R1234yf/R134a brass manifold gauge set, 2 1/2” gauges, 3-60” R134a standard hoses, R134a economy couplers (66234, 66334), R1234yf quick couplers (67434, 67534), 1/2” acme-m x 1/2” acme-f LH thread adapter (83633), (2) 12 mm-m x 14 mm-f R1234yf adapters (83735)