This is the Hot Bodies 2.5mm Factory Allen Wrench.

FEATURES: Replaceable steel shaft with aluminum handle

INCLUDES: 2.5mm Factory Allen Wrench

SPECS: Hex Size: 2.5mm Total Length: 7.5" (191mm)  

BOX DIMENSIONS: 3.25" W. X .75" H. X 10.00" L. BOX WEIGHT: .08 LBS.