Premium Ball-End Hex Bit Set with Quick-Change Design This - ball-end hex bit set features laser-etched size markings for instant identification. Its double-ended design integrates a 1/4inch hex shank for rapid tool-free swapping, ideal for working in tight or confined spaces. Compatible with electric screwdrivers, drills, and impact drivers. ✅ S2 Alloy Steel - High hardness and wear resistance. ✅ Ball-End Hex Tips - Allows angled screw driving (up to 25°). ✅ Universal 1/4inch Shank - Fits most power tools and manual drivers. ✅ Compact & Versatile - 12 sizes (2-12mm) cover diverse applications. Size Range: 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 12mm Shank Type: 1/4inch Hex Quick-Change (The actual product may have a slight color difference, which does not affect the use) Color: As Shown Material: S2 Alloy Steel Package Contents: 12pcs * screwdriver bit 1 * holder 1 * wrench Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.