Identify Broken Part and Prepare Tools

What happens here

Inspect the sickle bar to confirm the break. Typically, only the cutter blade portion moves, but for this specific model, both the guard and the cutter blade move. The problem is a break in the main drive strap. The presenter holds up a new, red replacement strap, showing its bolt holes and the bearing at the end. He identifies a DeWalt socket set, specifically a 13mm socket, as the primary tool needed to remove the guards.

Goal: Confirm the exact broken component and gather necessary tools