Mastercool MSC-82834-E High Side R134A 0.25 x 16 mm.
25 x 16 mm..FeaturesPatented manual couplers adjust easily to R134a service ports with varying dimensionsAll metal construction for extra durabilityPatented, spring loaded depressor will not damage service valvesCan be removed from service ports regardless of knob position without losing refrigerantMeets SAE, UL and EPA requirements for containment of refrigerantColor codedSize - 0.