Expert BRIE113923B Metric Short Arm Hexagon Key 11mm The Expert Metric Short Arm Hexagon Keys are manufactured from chrome vanadium steel for increased torque strength that exceeds current standards. They have a black zinc plated finish. Micro chamfered angles on the end faces provide increased grip in the screw head. Conform to ISO 2936 - DIN 911. This Expert Metric Short Arm Hexagon Key has the following dimensions: Size: 11mm Arm Length: 129mm L Length: 53mm Weight: 143g