Screwdriver: Why the weird hex bump?It's a built-in feature for removing stubborn screws.

From the show

Why it looks like that

Discover the purpose of that hexagonal section on your screwdriver's shaft. It’s a deliberate design feature called a hex bolster, meant to be used with a wrench to give you extra turning power. This built-in 'cheater bar' lets you apply significantly more torque, making it possible to loosen rusted screws or tighten new ones with maximum force. It's a game-changer for tough jobs.