Milwaukee Standard & Metric 22Pc Ball End Hex Key Set, 1.5 to 10mm & .050" to 3/8"

The 48-22-2187 Milwaukee Standard & Metric 22Pc Ball End Hex Key Set is a dual-range Allen key kit built for fast access, better angle driving, and high durability across both SAE and metric fasteners. It features a pivoting holder with offset keys for easier reach, ball ends for improved access at angles, and high-contrast markings for quick identification. Made from heat-treated alloy steel to withstand more torque, each key has a black oxide finish to resist rust and corrosion and chamfered ends for easier insertion. The holder keeps the most popular sizes organized, includes a hang hole for easy storage, and is backed by a limited lifetime warranty.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: 48-22-2187
• Brand / Series: Milwaukee
• Product Type: Ball end hex key set (SAE + metric)
• Piece Count: 22-piece set
• Size Range: 1.5–10mm and .050"–3/8"
• Access Design: Pivoting holder & offset keys for easiest key access
• Angle Access: Ball end for better angle access
• Strength: Keys designed to withstand more torque
• Material: Heat-treated alloy steel
• Finish: Black oxide finish resists rust and corrosion
• Insertion: Chamfered key ends for easier insertion into fasteners
• Organization: Most popular key sizes in handle for quick selection
• Storage: Hang hole for easy storage
• Warranty: Limited lifetime warranty
• Included Metric Keys (9): 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10mm
• Included SAE Keys (13): .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"
• Includes:
  • (1) .050" Ball End L-Key
  • (1) 1/16" Ball End L-Key
  • (1) 5/64" Ball End L-Key
  • (1) 3/32" Ball End L-Key
  • (1) 7/64" Ball End L-Key
  • (1) 1/8" Ball End L-Key
  • (1) 9/64" Ball End L-Key
  • (1) 5/32" Ball End L-Key
  • (1) 3/16" Ball End L-Key
  • (1) 7/32" Ball End L-Key
  • (1) 1/4" Ball End L-Key
  • (1) 5/16" Ball End L-Key
  • (1) 3/8" Ball End L-Key
  • (1) 1.5mm Ball End L-Key
  • (1) 2mm Ball End L-Key
  • (1) 2.5mm Ball End L-Key
  • (1) 3mm Ball End L-Key
  • (1) 4mm Ball End L-Key
  • (1) 5mm Ball End L-Key
  • (1) 6mm Ball End L-Key
  • (1) 8mm Ball End L-Key
  • (1) 10mm Ball End L-Key

Ideal For

• Tight fastener access using the pivoting holder and offset key design
• Driving at angles with ball end hex keys when straight access is limited
• Mechanics, maintenance, and assembly work needing both SAE and metric coverage
• Jobsite environments where black oxide corrosion resistance helps extend tool life
• Keeping common sizes organized and easy to grab with popular sizes stored in the handle