Eklind 22-Piece Combination SAE & Metric Hex Key Set a comprehensive selection of both SAE and metric hex keys to meet a variety of fastening needs. This set includes long arm hex keys in sizes ranging from .050" to 3/8" and short arm metric hex keys from 1.5mm to 10mm. Crafted from durable 8650 chrome nickel alloy steel, these keys provide maximum performance and long-lasting strength. Each key is securely held in a plastic holder with clearly marked sized holes for easy organization and quick access. for professionals and DIY enthusiasts alike, this versatile set ensures you have the right tool for every job. Model Number: 10022