This is the 5.5 Nut Driver from O.S. Speed.

FEATURES: Aluminum handle Anodized black in color Hollow handle for storage Driver size printed on label for easy identification

INCLUDES: One 5.5 Nut Driver

SPECS: Total Length: 165mm (6.5") Handle Length: 85mm (3.3") Handle Diameter: 15mm (0.59")  

BOX DIMENSIONS: 1.00" W. X 1.00" H. X 10.25" L. BOX WEIGHT: .11 LBS.