Klein Tools 70550 Hex Wrench Key Set, 11 SAE Sizes,...

Pro Folding Hex Key Set with 11 extended-reach blades
Key sizes: 1/2, 3/8, 5/16, 1/4, 7/32, 3/16, 5/32, 9/64, 1/8, 7/64, and 3/32-Inch
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
Conveniently houses the most frequently used hex key sizes in one set
Blades are made of tough, heat-treated alloy steel and range from approximately 3.5 to 4.5-Inches long
Reinforced nylon handle has a sturdy, comfortable grip