7 Pieces air conditioning refrigerant ball valve set includes 3 pieces angled compact ball valve and 4 pieces adapter for mini split system. Compatible with: R410A, R134A, R12, R22, R502, HVAC refrigeration charging hoses. Angled compact ball valve: Specifications: Size: 4.9 x 3.7 x 0.9 inches, Weight: 10.7 ounces, Material: copper. Features: Designed for 1/4 inch refrigerants, 3 Pieces color coded shut valves, Can be operated with one hand, screws onto charging hose end. Made of solid metal for durable use. Adapter for mini split system: Specification: Size: 3.9 x 2.7 x 0.8 inches, Weight: 2.88 ounces, Material: copper. Function: converts the 5/16 inch charging-vacuum ports (R410a style) to accept 1/4 inch gauge-hose set. Features: 1/4 Inch male x 5/16 inch female adapter. Fits for R410a mini split system air conditioners, HVAC and refrigeration service. The thimble of the connector is protected against fluoride leakage. Made of brass, access valves high tensile strength while resisting corrosion. Easy to operate and install. Package includes: 3 x Hose globe valve, 4 x Adapter for mini split system.