The Toe Adjuster Strap that you can adjust with the screw on the toe cap. 

The Toe Adjuster Strap F1.0 is designed specifically for use with CLEW Freedom 1.0 bindings. The strap with five holes is the standard one.

If your bindings were previously equipped with toolless screws (which differ from the current screws in the Ankle & Toe Adjuster Screw Set F1.0 in the spare parts shop), you will need to purchase the Ankle & Toe Adjuster Screw Set F1.0 separately to ensure proper installation.