Easily swap 1/4” standard service port fitting with optional 5/16” fitting for mini-splits Integrated sight glass to visually verify the valve core is engaged & refrigerant is flowing before removing it Magnetic cap allows for easy placement of the valve core set during service Vacuum-Rated to 20 microns and A2L Compatible, Fieldpiece valve core recovery tools are idea for HVAC and HVACR technicians Fieldpiece VCRTs have a 1-yr warranty from date of purchase