AWS-10 Includes 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, and 6mm hex wrenches TWS-2 Includes T7, T9, T10, T15, T20, T25, T27, T30 and T40 wrenches Wrenches made from industrial tool steel, through hardened and tempered for long life Chamfered tips for a perfect fit