2 Pack Pro Folding Hex Key Set With Extended-Reach Blades Approximately 3.5-Inch To 4.5-Inch Long For Greater Reach, Effortlessly Adjust Key Tightness Or Looseness With The Convenient #2 Phillips Fastener, High-Leverage Blades Open Independently Up To 270 Degrees, Hex-Key Ends Are Square-Cut For A Secure, Full-Depth Fit And Maximum Contact With The Socket To Prevent Slippage And Stripping, Reinforced Nylon Handle Has A Sturdy, Comfortable Grip, Blades Are Made Of Tough, Heat-Treated Alloy Steel To Prevent Rust, Openings On The Sides Of Case Provide Unimpeded Access To Outer Keys, 21 Key Sizes: 3/32-Inch, 7/64-Inch, 1/8-Inch, 9/64-Inch, 5/32-Inch, 3/16-Inch, 7/32-Inch, 1/4-Inch, 5/16-Inch, 3/8-Inch, 1/2-Inch 1.5 Mm, 2 Mm, 2.5 Mm, 3 Mm, 4 Mm, 5 Mm, 6 Mm, 8 Mm, 10 Mm, 12 Mm