ATK67 6 Point Star Security Bit Set with Security Bits (Torx TR Style with Pin In Hole), for Screwdriver Handle for 1/4 Inch Bits. Tool Sizes T4, T5, T6, T7, T8, T9, T10, T15, T20, T25)

Had some security screws that I needed to take out. These bits worked great. Seem durable, but I haven't used them a whole lot.

And they're made of a very hard steel, so I think they're going to last for quite some time. They don't come with their own "handle", but fit easily into any standard 'nut driving' type tool.They've already gotten me through a half dozen repairs, so they've paid themselves off nicely. A good price, too!If you need star bits this small, Silverhill is a good brand to buy: durable and a nice price.

They go dull very easy. If you want to screw only 2 screws to a wood that already have the holes to screw in, 1 of them will be enough to order. More than 2 screws… do the math!

You must have a set of these. Seriously. Just when you think you have all the tools you'll ever need, you need to remove a TORX screw with a security feature. And you are 'cooked'. Yeah, try to Dremel it out- god luck with that. Cheap insurance and good quality set of bits.

I haven't used these, yet. However like to note that the description is in fact slightly wrong compared to the item received. The bits that are not "security bits" (hallow center) are T4, T5, T6, AND T7. The set looks pretty good. Comparing them to some bits that I have the 'points' don't look nearly as nice. My T8 bit in particular worries me. The points are all different sizes on the T8.. However this might be completely a mute point, like I said I haven't got to use them yet. I'm going to leave a 5-Star review for the time being and if I do find they end up wearing faster, etc than I'll update the review. Otherwise they worked great and I would recommend.

The holes are very far off center.On the T7 bit, the hole is significantly off center. The thickest wall appears to be more than twice as thick as the thinnest.On the T8 bit, the hole is somewhat off center. The thickest wall appears to be 1.5x as thick as the thinnest.On the T9 bit, the hole is extremely off center, within a few thousandths of an inch of breaking through to the outside. The thickest wall is around 5x as thick as the thinnest.On the T10 bit, the hole is somewhat off center. The thickest wall appears to be 1.5x as thick as the thinnest.On the T15 bit, the hole is significantly off center. The thickest wall appears to be 3x as thick as the thinnest.On the T20 bit, the hole is somewhat off center. The thickest wall appears to be 2x as thick as the thinnest.On the T25 bit, the hole is somewhat off center. The thickest wall appears to be 1.5x as thick as the thinnest.Will these serve the purpose they're supposed to? I'm not sure. The off-center hole might keep them from fitting on some security torx fasteners. Based on the manufacturing tolerances I don't really trust the material either. I know this is an inexpensive product, but I was hoping the quality would be reasonable.

I wanted them to work on my MAC computer. They did work OK. However, you have to be careful not to put to much torque on them when using them. They are not very big and you can twist the ends off with to much pressure. They did the job I bought them for.

I purchased this set of star points to adjust several different multi-tool knives. They are well-made bits and have become indispensable to me. You really need two identical sets of these little devils - since you need to apply torque simultaneously to the star fittings on opposite sides of the bearing when adjusting. Using the Silverhill Security bits (Security here means the star has a post which needs a corresponding hole in the bit) I was able to fine tune the knife blade on a stiff Leatherman Charge so that it opens smoothly yet displays no discernible play. I also repaired a Gerber multi-tool spring assisted blade that had more than 3-mm of play.