YIYITOOLS Hex Key Wrench Set - 26-Piece, 1/20-3/8 inches, 1.27-10 mm, Black and Silver

Materials : Alloy steel, Net Weight: 860g 26 pieces of Hex Key Wrenches. Including 1. 27-1. 5-2-2. 5-3-3. 5-4-4. 5-5-5. 5-6-8-10mm, and 1/20-1/16-5/64-3/32-7/64-1/8-9/64-5/32-3/16-7/32-1/4-5/16-3/8 inches. Forged from high quality alloy steel, high hardness, good toughness, high torque, rugged, durable. Smooth workmanship, even torque, improve work efficiency. Precisely sized, chamfered, straight ends offer a snug fit and insert smoothly into fastener head, reducing wear. Black oxide finish protects against corrosion . Long arm/short arm design offers extended reach on one end and extra leverage on the other. Folding plastic clip design, not easy to fall down. Easy-to-read sizes marked on case for fast size selection.