1/2-Inch Click Torque Wrench- 40-320FT.LB/54.2-433.6Nm Dual-Direction Adjusta...

Quick Torque Setting: Simple and fast torque setting, pull down the locking knob and hold it down to rotate to the torque you need. Release the hand and the locking knob will automatically rebound to lock the torque value.

eBay