This is the 10 Piece Metric Ball End L-Wrench Set from Bondhus.
FEATURES: Exclusive Max Torque ball shape delivers two times the torque of
competitor ball end tools
Ball end on long arm allows access to screw heads in tight places
straight-in or at an angle
Inserts into screw and works at a 25° angle
Constructed of protanium high torque steel, black in color
INCLUDES: One each 1.5mm 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm and 10mm size