Know you've got it - the VC2G has an integrated sight glass so you visually verify the valve core is engaged before removing it, as well as confirm refrigerant is flowing. A second ball valve on the side port protects your vacuum and pressure gauges.
Fieldpiece Dual-Valve Core Removal Tool, 1/4 in, Female Service Port x Male Side Port x Male Service Hose Connection, 5.06 in Length, 1-1/2 in Width, 2.63 in Height, 800 psi, Additional Information: 20 um Vacuum Rating