Designed for 3D Printing Maintenance and Assembly Routine maintenance, upgrades, and printed part assembly often require accessing tightly spaced screws on hotends, extruders, frames, and small mechanical components. This precision screwdriver kit provides the essential tools needed to handle these tasks efficiently and safely. Hex Sizes Optimized for 3D Printing Hardware Most modern FDM printers rely heavily on metric hex fasteners. The included hex sizes—from H4.0 to H0.9—cover common components such as frame bolts, hotend assemblies, extruders, and printed part hardware, making it a practical toolkit for both maintenance and assembly work. Durable S2 Steel Bits with Nickel Plating The screwdriver bits are made from high‑strength S2 tool steel, providing excellent hardness and wear resistance. The bright nickel plating improves corrosion resistance while maintaining precise edges for reliable screw engagement. Ergonomic Handle with Quick‑Change Chuck The aluminum alloy handle provides a comfortable anti‑slip grip for precise control. A magnetic self‑locking chuck allows fast bit installation, and all bits are stored in a compact case that keeps them organized and ready to go. Basic Information Handle Material Aluminum alloy with anti-slip finish Bit Material S2 steel, nickel-plated Bit Length Approx. 100 mm, suitable for blind holes up to 60 mm depth Packaging Transparent storage case Instructions & Notes Magnetic Self-Locking Mechanism:Push the black self-locking collar upward, insert the bit into the handle, then release the collar to automatically lock the bit.To remove a bit, push the collar upward again and pull the bit out. Always match the bit size to your screw to prevent damage. Wipe bits dry after use in humid environments to maintain rust resistance. Store in a dry location when not in use. Designed for precision work—avoid high-torque applications.