Tool for impacting screws — What is it called?

Question

What is the name of this tool?

Purpose: Hit it with a hammer to loosen a seized screw, etc.

Source:

• YouTube channel "wtbm123": Can your screw driver do this, Weird Tools and my ratcheting screwdriver
• Go to 0:33. Speed up the playback speed since this guy talks slowly.

Answer 1

It's (to my knowledge) called a screw impact driver, impact screwdriver, hand impact screwdriver, or just impact driver.