1 hose with an R134 top tap and R1234yf vehicle connection. The can itself has a R134 top on it as shown in the picture so you will need a hose with a R134 top tap and R1234yf vehicle connection. Part#: 3645.
Enviro-Safe R1234YF Dye Charge 4 OZ Can & Charging Hose, Dye charge for R1234
Enviro-Safe R1234YF Dye Charge, 1234yf, case of 4 (4 oz) Economy Charging Gauge
Enviro-Safe R1234YF Dye Charge For 1234yf, case of 12 4 oz.
Enviro-Safe R1234YF Dye Charge For 1234yf, case of 5 4 oz cans.
Enviro-Safe R1234YF Dye Charge For 1234yf, case of 3 4 oz cans.
Enviro-Safe R1234YF Dye Charge For 1234yf, case of 12 4 oz. with Brass Gauge