This is Du-Bro #442 5/64 Standard Ball Wrench.

The perfect tool for getting into those hard to reach places. Ball wrenches make it possible to turn socket head screws or bolts from various angles. Available in many sizes.

• Ball End inserts into screw at a 25deg angle
• Ergonomic handle design
• Non-slip grip
• Two component handle with tough inner core and cushioned rubber exterior
• Anti-roll design