This Self-sealing R1234yf Charge hose with Gauge and Tapper fit all Self-sealing R-1234yf cans with 1/2 acme LH left hand threads, easy to install, easy to recharge auto A/C systems. 1/2" ACME LH left hand thread; Self-sealing can tap; Tapper’s material: Solid metal construction; High quality charge hose; Quick coupler to low side service(charging) port; 2in. (D.) Gauge, 0-100psi; Overall length 16in.; Net weight: 9oz. Description: This Self-sealing R1234yf Charge hose with Gauge and Tapper fit all Self-sealing R-1234yf cans with 1/2 acme LH left hand threads, easy to install, easy to recharge auto A/C systems. 1/2" ACME LH left hand thread; Self-sealing can tap; Tapper’s material: Solid metal construction; High quality charge hose; Quick coupler to low side service(charging) port; 2in. (D.) Gauge, 0-100psi; Overall length 16in.; Net weight: 9oz.