Allen wrenches and Hex keys seem very similar to each other. We break down the relationship between the two and some other ...

This article was originally published with the title “ Screw-driver Wrench and Tap Wrench ” in Scientific American Magazine Vol. 105 No. 20 (November 1911), p. 433 doi:10.1038 ...

The 18V Compact Impact Wrench (SSW 18 LTX 300 BL) has a no-load speed of 2,650 rpm, 221 feet-pounds of torque and 3,750 BPM, while the 18V Impact Driver (SSD 18 LTX 200 BL) has a no-load speed of ...

The reason the bolt and two nuts solution is a good Allen wrench alternative is that it doesn't do any damage to fasteners or tools. While there are other methods that can work, they can either ...