Features Specifications: Deep Socket Assortment Set, Internal Concave Hex Drive, with 16 Different Specifications to Meet Different Usage Needs. Hex Shank: These Sockets Have Universal Hex Shank, The Slot Design Ensures Stable Clamping, And The Deep Sockets for Easy Nut Insertion. Applicable Tools: These Hex Drive Sockets Can Be Used for Electric Drill, Bench Drill, Air Driver, Electric Wrench, Etc., Easy to Install And Disassemble. Excellent Metal: Made of Chrome Vanadium Steel, with High Hardness And Wear Resistance, Heat Processing Finish, Waterproof And Rustproof. Wide Application: This Socket Assortment Set Is Suitable for Automotive Maintenance, Home Repair, Manufacturing Industry, Construction Projects, Etc. Specification: Item Type: Socket Set Material: Chromium Vanadium Steel Specification: 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm Package List: 16 x Sockets 1 x Storage Box Package List 16 x Sockets 1 x Storage Box