Feature:1. ROBUST S2 ALLOY STEEL: Crafted from excellent quality S2 alloy steel, this hex bit set is built to last and is great for industrial use, ensuring reliability and longevity in demanding applications2. SAE HEX BIT SET: The set includes a variety of imperial sizes, featuring 5/64 inch, 5/64 inch, 3/32 inch, 3/32 inch, 7/64 inch, 1/8 inch, 9/64 inch, 5/32 inch, 3/16 inch, 7/32 inch, 1/4 inch, and 5/16 inch, providing a complete range for versatile tasks3. METRIC HEX BIT SET: The 1/4 inch hex shank set includes 12 hex bits in a comprehensive range of sizes: 1.5mm, 1.5mm, 2mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, 6mm, 7mm, and 8mm4. WIDE COMPATIBILITY: With a standard 1/4 inch hex shank, these bits fit various quick change chucks and hex tools, making them suitable for use with pneumatic screwdrivers, electric screwdrivers, air drills, electric drills, and more5. STRONG ADHESION: Designed for optimal grip, these bits hold firmly onto screws and fasteners during use, significantly reducing the slippage and ensuring safe, efficient work every timeSpecification:Item Type: Hex Bit SetMaterial: S2 Alloy Steel12 Piece Metric Set: 1.5 1.5 2 2 2.5 3 3.5 4 5 6 7 8mm12 Piece SAE Set: 5/64 5/64 3/32 3/32 7/64 1/8 9/64 5/32 3/16 7/32 1/4 5/16 inSingle Size: Approx. 25 x 6.35mm / 1 x 1/4in.Package List:24 x Hex Bits2 x Storage Racks