These are the MIP Speed Tip 3-Piece Hex Driver Metric Wrench Inserts.

FEATURES: Compatible with standard 1/4" hex chuck with adjustable clutch- works with nearly any power drill or screwdriver Precision CNC ground in house from hardened US tool steel drill blanks Laser marked with the MIP Logo and hex size Limited lifetime warranty through MIP beginning at date of purchase

INCLUDES: 1.5mm 2.0mm and 2.5mm Hex Drivers

SPECS: Length of 2.0, 2.5mm Wrenches: 4.2" (107mm) Length of 1.5mm Wrench: 3.5" (89mm) 13  

BOX DIMENSIONS: 4.00" W. X .25" H. X 5.88" L. BOX WEIGHT: .11 LBS.