It's ahrd to plan for when you'll need one of these and exactly what size. I like having a big variety onhand. The set of metric and SAE have me covered. 1305 pieces are plenty to keep me going for years. They include the fitting Allen wrenches and tweezers. I hadn't thought about it but the tweezers sure make it easier to get them in the holes right side up. The quality is very good. No bare spots or stray edges. The black coating is first rate. Since the come by ship from China it's good they are lightly oiled and sealed in plastic bags. I'm leaving them in the bags for longevity. For $24 they are a good deal too.

This combination Metric and SAE set screw assortment contained the 5/32 3*1/4 inch set screw required to repair an antique toilet paper holder. I visited many stores in our area but wasn't able to find the 5/32 size. This assortment was delivered in two high quality plastic cases with firm dividers making it easy to store and sort through various sizes for many home improvement projects. Each set of screws was individually wrapped in a small zip lock bag to ensure that the screwed didn't get mixed up during transport. Each box contains Allen wrenches in various sizes, and a set of fine tweezers to pick up and hold the smallest set screws. I'm very glad to have this set of set screws in my collection.

If I had a nickel each time I dropped / lost a set screw… I’d be a rich man. This assorted set of Metric and SAE set screws solves my worry of ever losing a tiny set screw again. I’ve got all the sizes I could want and need. The product comes in two separate plastic organizers, one for the Metric size and another for the SAE size. Both sets also come with a tiny pair of tweezers and also the corresponding Allen key sizes. The set screws themselves also come in plastic bags, I assume to ensure they keep separated and organized. This extra step is greatly appreciated since I have had these types of containers fail me in the past. The set screws all match their advertised sizes, and the quality of metal seems to be on par with anything else. I’ve already used many of these and I haven’t had any issues or concerns. Seeing as this product is exactly what is advertised, and works perfectly, I see no reason to rate less than 5 stars!

12.9 steel is one of the hardest steels used for nuts, bolts etc. That's exactly what this set of hex drive set screws are made of. This is the largest quantity set I've seen. This set comes with both Metric and SAE for a total of 1305 pieces, each having their own plastic box. The boxes seem a little flimsy with the buckles looking as if they would easily break off. There is a size and placement chart on the outside of each box lid, but not one on the inside where it's needed in order to really see the size of the set screw needed. Closing the box to see the chart can be confusing for some and is a waste of time. The cost for an inside label is minimal. There are a lot of very nicely made set screws in these two boxes, too bad the plastic box and label are subpar.

I ordered these set screws to augment my supply of spare parts. Set screws are one of the easiest items to lose at the most inconvenient of times. I have accumulated a few set screws over the years but I have not sorted them. I don’t even know what size they are since they are “extras” from other projects or products. 😊 These two collections of metric and imperial set screw sizes are the perfect solution to my lack of organizational skills, or more accurately, my lack of patience to deal with my haphazard collection. In addition to a great assortment of set screws, this product offering also provides the Allen wrenches you will need. And for fat-fingered folks like me, tweezers are provided for handling the smaller set screws. And to make this a perfect combination, all items conveniently store in the two storage cases, with each case providing a legend of the sizes on the top of the case. Win win win. If you have ever used or needed set screws, I urge you to grab this deal.