This is the 2.5mm Hex Driver from O.S. Speed.

FEATURES: Aluminum constructed handle Anodized black in color Size printed on handle for easy identification Hollow handle for storage

INCLUDES: One 2.5mm Hex Driver

SPECS: Total Length: 200mm (7.9") Handle Length: 95mm (3.7") Handle Diameter: 17mm (0.67")  

BOX DIMENSIONS: 1.00" W. X 1.00" H. X 10.25" L. BOX WEIGHT: .12 LBS.