[Interchangeable Torque Wrench]--This interchangeable torque wrench is designed for use on production lines and other applications that require specific torque for repeated operations. Interchangeable heads allow use of the adjustable torque wrench body for ratcheting, fixed, socket or open end torque capabilities. Pushing the locking pin allows for a quick change action, and there are a variety of styles to choose from. [9x12mm Open End]--The torque wrench includes a 30mm adjustable open end. This HVAC torque wrench is suitable for industrial, refrigeration system, automotive and aerospace application controls. It's also a great tool for tightening the flare nut connections on your mini-split air conditioner. [Precise Digital Wrench]--Our small torque wrench features a ratchet that provides a torque force range of 5-30NM. This means it is versatile and suitable for a variety of applications. It arrives pre-calibrated with a guaranteed accuracy of +/-4%. [Reliable Clicking Wrench]--When the wrench's preset torque value is reached, the simple and reliable mechanical operation within the handle produces a clicking sound you can hear and feel, reminding you to stop applying force. [Easy to Use and Read]--The torque wrench is user-friendly; just pull down on the "locking ring" to unlock. Clockwise direction increases the value, counterclockwise direction decreases the value. Then push up on the "locking ring" to lock in your desired torque. The high-contrast Nm scale is easy to read and operates clockwise and counterclockwise. Material: Metal colour: As Shown Package Contents: 1 x wrench Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.