VEVOR AC Gauge Set - 3 Way AC Manifold Gauge Set for R134A R22 R12 R502 Refrigerant, Freon Gauges with 5ft Hoses, Couplers, Can Tap Works on Car Auto Freon Charging and Evacuation

is this for R410A on the title high light or R502 on the Discription?

The description does not state whether the can tap is the piercing type, or the self-sealing can type. Please clarify. Thanks.