LUOWEI Adjustable Torque Electric Screwdriver Set 1. Front end built-in strong magnetic adsorption design, bits securely locked by magnetism. One-key assembly & disassembly, convenient replacement, efficient and smooth operation 2. Simple easy keys operation: Simple and neat key design, clear and reasonable layout, user-friendly operation logic 3. Tight engagement slip-resistant: Adopts high-precision engaging technology that precisely fits screw grooves. High-strength locking, not easy to slip or idle 4. Long-lasting battery, precise non-slip, engagement,non-drop design. 40mm ultra-fine bits work freely in narrow, deep screw holes 5. High-spec high-power brushless motor. Quiet and smooth operation, large torque with precise and stable output. Durable without performance degradation 6. 4 LED shadowless lamps provide clear illumination, brightening dark corners easily, allowing you to see small screws at a glance 7. Multiple functions perfect display: HD OLED display, clearly shows battery level, gear and rotation direction 8. Package includes: 1 x Handle 22 x Bits