Specification: Hexadecimal bit adapter:Material: heat treatment and black coating.Wrench length: 5.43 inchesSize: 1/4 inch and 5/16 inch.Size: 3/16 inch and 5/16 inch, 1/4 inch and 3/8 inch Feature: 1. Made of high-quality materials, durable2. The ratchet repair wrench is a manual screw tightening tool that allows you to easily adjust the angle when using the wrench.3. We provide two wrenches in four sizes: 1/4, 3/8, 3/16 and 5/16, and two hax drill adapters that can meet your requirements.4. It is a necessary tool for equipment installation, equipment maintenance, and maintenance centers5. Hvac repair wrench, WADEO refrigeration repair wrench set, 3/8 to 1/4, 5/16 x 1/4 ratchet repair wrench, with hexagon head adapter, used for air conditioning, refrigeration equipment, equipment repair6. Material: HVAC repair wrench set is made of stainless steel, durable and corrosion-resistant. The hex bit adapter is a heat-treated black coating.7. 4 different sizes of WADEO refrigeration repair wrench sets: 1/4"", 3/8"", 3/16"", 5/16"", these sizes are the most commonly used sizes when repairing air-conditioning and refrigeration equipment.8. Hexagon bit adapter: 2 inches long, sizes: 3/16'' and 5/16''.9. Compact and simple design: This a/v service wrench set is compact in size, with clearly marked sockets of four nut sizes. The flat non-slip refrigeration wrench can exert maximum leverage and is suitable for daily work and home maintenance.