Just unboxed the mxuteuk M3 screw kit, and I'm already impressed by the sheer variety. With 620 pieces including bolts, nuts, spacers, and washers, it's like a LEGO set for my 3D printer—except way more practical.

The 12.9-grade alloy steel feels sturdy, and the galvanized coating gives a smooth finish. I used the M3x10mm screws to secure a wobbly extruder bracket, and they fit perfectly—no stripped threads or awkward gaps. The hex socket design made tightening effortless with the included wrench.

One gripe: The screws arrived oily (probably anti-rust treatment), which turned my fingers into a greasy mess. A quick soak in degreaser solved it, but it’s worth noting if you’re working with clean prints. Also, the plastic box dividers are flimsy—mine collapsed during shipping, mixing sizes. I transferred them to a fishing tackle box for better organization.

For the price, this kit is a steal. Whether you’re assembling a Voron or just need spare parts, having every M3 size on hand saves midnight Amazon runs. Pro tip: Label compartments unless you enjoy playing 'guess the length' mid-project.