Klein Tools' Pro Folding Hex Key Line Features A Highly Durable Reinforced Nylon Handle With Easy Access to Each Key. The Heavy-Duty 11-Piece Set Includes 4-Inch-Long Extended Reach Blades and A Strategically Placed #2 Phillips Fastener On The Outer Body For Effortless Key Tension Adjustment. Klein Tools' Hex Sets Are Color-Coded For Quick Identification: Red For Inch, Blue For MM, and Green For Torx®, Enhancing Efficiency.