This is the Factory Team 8.0mm Nut Driver Bit from Associated.

FEATURES: Fits 1/4" driver handle Steel construction

INCLUDES: 8.0mm Nut Driver Bit

REQUIRES: Installing in handle

SPECS: Length: 2.9" (75.5mm) Nut Driver Size: 8.0mm  

BOX DIMENSIONS: 3.00" W. X .38" H. X 3.25" L. BOX WEIGHT: .04 LBS.