Essential Kit: Set of 4 cans of Arctic Air R1234yf Support and a flexible brass charging gauge for convenient air conditioning top-ups. Compatibility: Compatible with R1234yf refrigerant systems, designed for automotive air conditioning units. Canister Size: Each can holds 4 oz (113g) of Arctic Air R1234yf Support. Easy Usage: Simply connect the charging hose to the low-side service port and follow the instructions for a quick top-up. NOTE: It features a 134a piercing style top on the can, requiring the correct tap/hose for use. DESCRIPTION * Kit includes: * Arctic Air for 1234yf * 1 each #3600 134a can tap to 1234yf vehicle end hose * Aerosol * This product is a combination of 2 Enviro-Safe products into 1 for maximum cooling performance. This will remove moisture in the A/C system. Moisture can cause corrosion in the A/C system or the A/C to freeze up. * The other part of the product will reduce friction in system and provide colder air duct temps in most cases. * Compatible with any automotive refrigerant except ammonia and CO2 * Drying agent * Colder air * Longer life * A/C Booster * DO NOT use in ammonia systems * DO NOT use in CO2 systems * Cannot be sent to Alaska or Hawaii or exported to foreign countries except in pallet quantities * Gas propelled * Installs the same way as refrigerant * Cannot be added to a fully charged system DIRECTIONS FOR USE: Read and understand all warnings and directions before use. As per use with any flammable substance, take adequate precautions during use. 
1. Shake can well. 
2. Install can tap valve and charging hose. 
3. Install charging hose on low pressure side ONLY 
4. Invert can. 
5. Install all product from can 
6. Operate system for thirty (30) minutes with air conditioning system operating at normal temperature. 
7. For systems containing excessive moisture, ProDry may be required in addition to Arctic Air.
8. Discard empty can according to all rules and regulations for disposal in your area. These are 4oz cans.