Features:4 Different Sizes of Refrigeration Service Wrench Set: 1/4", 3/8", 3/16", 5/16", these sizes are the most commonly used sizes when repairing the air conditonning and refrigeration equipment.Hex Bit Adapter: 2 inch long, size: 3/16'' and 5/16''.Hvac service wrench set are made of high carbon steel, strong, durable and corrosion resistant. the hex bit adapter is heat-treated black coating.This a/c service wrench set is compact in size, with clearly marked sockets for four nut sizes. Flat anti-skidding refrigeration wrench, allowing maximum leverage.Suitable for daily work and household maintenance.Package Includes:2x Ratchet Wrench2x Hexagon Bit AdapterSpecifications:Material: High Carbon SteelWrench Length: 132mm/ 5.2 inBit Adapter Length: 51.5mm/ 2 inSocket sizes: 3/16 inch, 5/16 inch, 1/4 inch and 3/8 inch Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.