Start in deadlift set up but with hands set wide
Deadlift bar to mid-thigh, knees move back with shoulders and hips rising at the same rate
At mid-thigh rapidly extend the knee and hip to full extension. Arms straight
Once the shoulders have passed behind the bar, pull elbow high and outside allowing bar to stay close to the body.
Then turn the bar over and punch it into the overhead position with active shoulders and arms locked out. Land in a partial overhead squat.