JCSPBYL 200pcs M5 T-Nuts Screws Kit for 2020 Series Aluminum Extrusion,40Pcs M5x10,40Pcs M5x8 Hexagon Socket Screws,40Pcs M5 T Sliding Nut,40Pcs M5 T Nut,40Pcs Washers (Black Nut and Screw Kits)

I like this item because I use them to construct and assemble track for CNC

These nuts fit perfectly in my 2020 extruded aluminum. I'm working on a few projects, and needed a way to attach to 2020 without drilling into it. These fit in the slots perfectly and allowed me to fasten to the rails easily. They feel like they're decent material, I didn't notice any issues with cross-threading. Everything tightened down nicely without stripping out. This was exactly what I needed.

Odds and ends il use on little projects. Case isn't bad can hang it up in my little work area. Fast shipping

A good selection of sizes and styles to cover everything needed to work with 2020 extrusion, both sliding and drop in nuts. Will save trips to the hardware store and at a fraction of the cost.

These T-nuts are just what I was looking for and I didn't have any issues with quality. 100 is plenty for my 3D printer enclosure that I've been working on, and I have some spares for further projects.