Handle the most common hex fastener sizes with one set. The Milwaukee 48-22-2187 includes 22 heat-treated alloy steel keys with ball ends for angled access in tight spaces, plus high-contrast markings for quick size identification.

• 22 keys: 9 metric + 13 SAE sizes
• Metric: 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10mm
• SAE: .050", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8"
• Ball end design allows angled access up to 25 degrees off-axis
• Chamfered key ends for easier insertion into fastener sockets
• Heat-treated alloy steel for increased torque resistance
• Black oxide finish resists corrosion
• High-contrast markings for easy size identification