This is the Pro-Series Tools 5.5mm Box Wrench
By HPI Racing
FEATURES: These professional quality tools feature solid aluminum construction,
CNC machining, chunky handles with knurled grips at the tip end and
laser-etched markings for instant size identification. The tips are
factory-ground then hardened and black-coated for extra-long life and
good looks, and are easily replaceable.
The handle is made of aluminum and is gunmetal gray in color.
The tool tip is steel and is brown in color.
SPECS: Length: 7" (178mm)
Handle diameter: 22mm (7/8")
Handle length: 98mm (3-7/8")
Exposed tool tip, length: 81mm (3-3/16")
diameter: 8mm (5/16")
Hex socket: For 5.5mm hex head screws