This set includes 1pcs R22 v-alve, 1pcs R410 v-alve and 1pcs 1/4 SAE adapter. Made of quality copper material, thickened v-alve body, with fine durability. Perfect for air conditioner refrigerant adding use. You can have a try. Features: This set includes 1pcs R22 v-alve, 1pcs R410 v-alve and 1pcs 1/4 SAE adapter. Made of quality copper material, thickened v-alve body, with fine durability. Blue v-alve with 1/4 SAE interface, which is suitable for works with R22 air conditioner. Red v-alve with 5/16 SAE interface, which is suitable for works with R410 air conditioner. The adapter is used to transform hose thread from 5/16 SAE to 1/4 SAE. Specifications: Name: Safety Valves Set Material: copper? Item size: 70 * 25 * 25mm / 2.76 * 0.98 * 0.98in Item weight: 152g / 5.36ounce Package size: 143 * 95 * 42mm / 5.63 * 3.74 * 1.65in Package weight: 178g / 6.28ounce Packing List: 2 * Safety Valves 1 * Adapter