Also available in DePuy/Synthes/Johnson & Johnson Screw Removal Set (01.240.001).
Features include:
- 3.5 mm width across flats
 - For 4.5 mm Cortex, 6.5 mm Cancellous Bone Screws, 4.5 mm and 7.0 mm Cannulated Screws and 4.9 mm Locking Bolts
 - Used only for screw removal requiring greater than normal face
 
See close up below.

Trials available.
Synthes is a registered trademark of that corporation.