Stanley Hex Key Sets 9 Pc Long Spheric-Head Hex Key Set STMT94162-8About this Item:Package Contains: 9 Piece Extra Long End Hex Key Size-1.5mm,2mm,2.5mm,3mm,4mm,5mm,6mm,8mm,10mmANSI B18.3.2M-1979,GGG-K-275DS2 SteelSpherical head gives a working angle of up to 25°HRC 60+/-2, 20% higher torque vs Cr-VFine satin finishLimited lifetime warranty offered on the product